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$b$ decays: A factory for hidden charm multiquark states (2018)

F. Buccella

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): F. Buccella We assume that the two hidden charm pentaquark states discovered at L H C b are built from three light quarks and a c c ¯ pair. Further assumed is that the three light quarks and the c c ¯ pair are both in colour octet states. Thus, for the final J P = 5 2 + state, the three light quarks and the c c ¯ pair are in... [Phys. Rev. D 98, 114011] Published Thu Dec 13, 2018

Schlagwort(e): Strong Interactions

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Frustrated Kondo chains and glassy magnetic phases on the pyrochlore lattice (2018)

Jing Luo and Gia-Wei Chern

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): Jing Luo and Gia-Wei Chern We present an extensive numerical study of a type of frustrated itinerant magnetism on the pyrochlore lattice. In this theory, the pyrochlore magnet can be viewed as a cross-linking network of Kondo or double-exchange chains. Contrary to models based on Mott insulators, this itinerant magnetism appr... [Phys. Rev. B 98, 214423] Published Thu Dec 13, 2018

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

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Thema: Physik

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Assembly of eight spherical magnets into a dotriacontapole configuration (2018)

Stefan Hartung, Felix Sommer, Simeon Völkel, Johannes Schönke, and Ingo Rehberg

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): Stefan Hartung, Felix Sommer, Simeon Völkel, Johannes Schönke, and Ingo Rehberg The magnetic field of a cuboidal cluster of eight magnetic spheres is measured. It decays with the inverse seventh power of the distance. This corresponds formally to a multipole named a dotriacontapole. This strong decay is explained on the basis of dipole-dipole interaction and the symmetry of the... [Phys. Rev. B 98, 214424] Published Thu Dec 13, 2018

Schlagwort(e): Magnetism

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$b$-hadron production in the general-mass variable-flavor-number scheme and the LHC data (2018)

G. Kramer and H. Spiesberger

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): G. Kramer and H. Spiesberger We study inclusive b -hadron production in p p collisions at the LHC at different center-of-mass energies and compare with experimental data from the LHCb and CMS collaborations. Our predictions for cross sections differential in the transverse momentum and (pseudo)rapidity agree with data within unce... [Phys. Rev. D 98, 114010] Published Thu Dec 13, 2018

Schlagwort(e): Strong Interactions

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Effect of non-Gaussian lensing deflections on CMB lensing measurements (2018)

Vanessa Böhm, Blake D. Sherwin, Jia Liu, J. Colin Hill, Marcel Schmittfull, and Toshiya Namikawa

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): Vanessa Böhm, Blake D. Sherwin, Jia Liu, J. Colin Hill, Marcel Schmittfull, and Toshiya Namikawa We investigate the impact of non-Gaussian lensing deflections on measurements of the CMB lensing power spectrum. We find that the false assumption of their Gaussianity significantly biases these measurements in current and future experiments at the percent level. The bias is detected by comparing CM... [Phys. Rev. D 98, 123510] Published Thu Dec 13, 2018

Schlagwort(e): Cosmology

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Jets and threshold summation in deductor (2018)

Zoltán Nagy and Davison E. Soper

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Zoltán Nagy and Davison E. Soper We explore jet physics in hadron collisions using the parton shower event generator Deductor . Of particular interest is the one jet inclusive cross section d σ / d P T for jets of very high P T . Compared to the Born level, the cross section decreases substantially because of P T loss from the jet during sh... [Phys. Rev. D 98, 014035] Published Wed Jul 25, 2018

Schlagwort(e): Strong Interactions

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Hard scale uncertainty in collinear factorization: Perspective from ${k}_{t}$-factorization (2018)

Benjamin Guiot

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Benjamin Guiot We analyze two consequences of the relationship between collinear factorization and k t -factorization. First, we show that the k t -factorization gives a fundamental justification for the choice of the hard scale Q 2 done in the collinear factorization. Second, we show that in the collinear factorizatio... [Phys. Rev. D 98, 014036] Published Wed Jul 25, 2018

Schlagwort(e): Strong Interactions

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What is a parton shower? (2018)

Zoltán Nagy and Davison E. Soper

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Zoltán Nagy and Davison E. Soper We consider idealized parton shower event generators that treat parton spin and color exactly, leaving aside the choice of practical approximations for spin and color. We investigate how the structure of such a parton shower generator is related to the structure of QCD. We argue that a parton shower... [Phys. Rev. D 98, 014034] Published Wed Jul 25, 2018

Schlagwort(e): Strong Interactions

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Merger rate of a subdominant population of primordial black holes (2018)

Bradley J. Kavanagh, Daniele Gaggero, and Gianfranco Bertone

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Bradley J. Kavanagh, Daniele Gaggero, and Gianfranco Bertone The formation of astrophysical and primordial black holes influences the distribution of dark matter surrounding them. Black holes are thus expected to carry a dark matter “dress” whose properties depend on their formation mechanism and on the properties of the environment. Here we carry out a numer... [Phys. Rev. D 98, 023536] Published Wed Jul 25, 2018

Schlagwort(e): Cosmology

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Quantum collapse of a magnetic skyrmion (2018)

Amel Derras-Chouk, Eugene M. Chudnovsky, and Dmitry A. Garanin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Amel Derras-Chouk, Eugene M. Chudnovsky, and Dmitry A. Garanin Large thermal fluctuations can destroy skyrmions - tiny speckles of rotated magnetization in two-dimensional films. Yet at low temperatures skyrmions are believed to be topologically stable, which makes them good candidates for data storage and processing. However, as the authors demonstrate here, even at zero temperature a nanoscale skyrmion is not protected against quantum decay. The theory is based on the imaginary-time dynamics of the skyrmion. Due to the fact that even the smallest skyrmion is still formed by many atomic spins, its quantum decay provides an example of a nanoscale Schrödinger’s cat that one can study with modern measuring techniques. [Phys. Rev. B 98, 024423] Published Wed Jul 25, 2018

Schlagwort(e): Magnetism

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Attractive Fermi polarons at nonzero temperatures with a finite impurity concentration (2018)

Hui Hu, Brendan C. Mulkerin, Jia Wang, and Xia-Ji Liu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Hui Hu, Brendan C. Mulkerin, Jia Wang, and Xia-Ji Liu We theoretically investigate how quasiparticle properties of an attractive Fermi polaron are affected by nonzero temperature and finite impurity concentration in three dimensions and in free space. By applying both non-self-consistent and self-consistent many-body T -matrix theories, we calculate the... [Phys. Rev. A 98, 013626] Published Wed Jul 25, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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High figure of merit magneto-optics from interfacial skyrmions on topological insulators (2018)

Tonmoy K. Bhowmick, Amrit De, and Roger K. Lake

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Tonmoy K. Bhowmick, Amrit De, and Roger K. Lake In the Kerr rotation geometry, magneto-optic memory devices typically suffer from low figure-of-merit (FOM) and long write times. We show that skyrmions formed at the interface of a thin-film multiferroic and a topological insulator can give rise to high FOM magneto-optic Kerr effects (MOKEs). Huge ... [Phys. Rev. B 98, 024424] Published Wed Jul 25, 2018

Schlagwort(e): Magnetism

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Baryon parity doublets and chiral spin symmetry (2018)

M. Catillo and L. Ya. Glozman

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): M. Catillo and L. Ya. Glozman The chirally symmetric baryon parity-doublet model can be used as an effective description of the baryon-like objects in the chirally symmetric phase of QCD. Recently it has been found that above the critical temperature, higher chiral spin symmetries emerge in QCD. It is demonstrated here that the ... [Phys. Rev. D 98, 014030] Published Wed Jul 25, 2018

Schlagwort(e): Strong Interactions

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Impact of the cosmic variance on ${H}_{0}$ on cosmological analyses (2018)

David Camarena and Valerio Marra

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): David Camarena and Valerio Marra The current 3.8 σ tension between local [A. G. Riess et al. , arXiv:1804.10655 .] and global [N. Aghanim et al. (Planck Collaboration), Astron. Astrophys. 596 , A107 (2016) .] measurements of H 0 cannot be fully explained by the concordance Λ CDM model. It could be produced by unknown systematics or by p... [Phys. Rev. D 98, 023537] Published Wed Jul 25, 2018

Schlagwort(e): Cosmology

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Linear point standard ruler for galaxy survey data: Validation with mock catalogs (2018)

Stefano Anselmi, Pier-Stefano Corasaniti, Glenn D. Starkman, Ravi K. Sheth, and Idit Zehavi

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Stefano Anselmi, Pier-Stefano Corasaniti, Glenn D. Starkman, Ravi K. Sheth, and Idit Zehavi Due to late-time nonlinearities, the location of the acoustic peak in the two-point galaxy correlation function is a redshift-dependent quantity, and thus it cannot be simply employed as a cosmological standard ruler. This has motivated the recent proposal of a novel ruler, also located in the baryo... [Phys. Rev. D 98, 023527] Published Wed Jul 25, 2018

Schlagwort(e): Cosmology

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Spin-1 topological monopoles in the parameter space of ultracold atoms (2018)

Haiping Hu and Chuanwei Zhang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Haiping Hu and Chuanwei Zhang A magnetic monopole is a hypothetical elementary particle with an isolated magnetic pole. Its existence would directly lead to the quantization of electric charges. In recent years, analogs of magnetic monopoles, represented by topological defects in parameter spaces, have been studied in a wide ran... [Phys. Rev. A 98, 013627] Published Thu Jul 26, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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High magnetocaloric efficiency of a NiFe/NiCu/CoFe/MnIr multilayer in a small magnetic field (2018)

S. N. Vdovichev, N. I. Polushkin, I. D. Rodionov, V. N. Prudnikov, J. Chang, and A. A. Fraerman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): S. N. Vdovichev, N. I. Polushkin, I. D. Rodionov, V. N. Prudnikov, J. Chang, and A. A. Fraerman The isothermal magnetic entropy changes Δ S (i.e., the magnetocaloric potential) are studied in Ni 80 Fe 20 / Ni 67 C u 33 / Co 90 Fe 10 / Mn 80 Ir 20 stacks at temperatures near the Curie point of the Ni 67 C u 33 spacer by applying magnetic fields of a few milli-Tesla. Such fields were sufficient for toggling magnetic mo... [Phys. Rev. B 98, 014428] Published Thu Jul 26, 2018

Schlagwort(e): Magnetism

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Magnetic field induced phenomena in UIrGe in fields applied along the $b$ axis (2018)

Jiří Pospíšil, Yoshinori Haga, Yoshimitsu Kohama, Atsushi Miyake, Shinsaku Kambe, Naoyuki Tateiwa, Michal Vališka, Petr Proschek, Jan Prokleška, Vladimír Sechovský, Masashi Tokunaga, Koichi Kindo, Akira Matsuo, and Etsuji Yamamoto

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Jiří Pospíšil, Yoshinori Haga, Yoshimitsu Kohama, Atsushi Miyake, Shinsaku Kambe, Naoyuki Tateiwa, Michal Vališka, Petr Proschek, Jan Prokleška, Vladimír Sechovský, Masashi Tokunaga, Koichi Kindo, Akira Matsuo, and Etsuji Yamamoto The metamagnetic transition between the antiferromagnetic and paramagnetic state in UIrGe has been studied at various temperatures by magnetization, heat capacity, and magnetocaloric-effect measurements on a single crystal in static and pulsed magnetic fields applied along the orthorhombic b axis. A... [Phys. Rev. B 98, 014430] Published Thu Jul 26, 2018

Schlagwort(e): Magnetism

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Effect of uniaxial stress on the magnetic phases of ${\mathrm{CeAuSb}}_{2}$ (2018)

Joonbum Park, Hideaki Sakai, Andrew P. Mackenzie, and Clifford W. Hicks

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Joonbum Park, Hideaki Sakai, Andrew P. Mackenzie, and Clifford W. Hicks We present results of measurements of resistivity of CeAuSb 2 under the combination of c -axis magnetic field and in-plane uniaxial stress. In unstressed CeAuSb 2 there are two magnetic phases. The low-field A phase is a single-component spin-density wave (SDW), with q = ( η , ± η , 1 / 2 ) , and the high-field B ... [Phys. Rev. B 98, 024426] Published Thu Jul 26, 2018

Schlagwort(e): Magnetism

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Twist-3 generalized parton distributions in deeply-virtual Compton scattering (2018)

Fatma Aslan, Matthias Burkardt, Cédric Lorcé, Andreas Metz, and Barbara Pasquini

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Fatma Aslan, Matthias Burkardt, Cédric Lorcé, Andreas Metz, and Barbara Pasquini The subleading power of the scattering amplitude for deeply-virtual Compton scattering (DVCS) off the nucleon contains leading-twist and twist-3 generalized parton distributions (GPDs). We point out that in DVCS, at twist-3 accuracy, one cannot address any individual twist-3 GPD. This complication a... [Phys. Rev. D 98, 014038] Published Thu Jul 26, 2018

Schlagwort(e): Strong Interactions

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Exploring axionlike particles beyond the canonical setup (2018)

Gonzalo Alonso-Álvarez and Joerg Jaeckel

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Gonzalo Alonso-Álvarez and Joerg Jaeckel Axionlike particles (ALPs) are interesting dark matter candidates from both the theoretical and the experimental perspective. Usually they are motivated as pseudo-Nambu-Goldstone bosons. In this case one of their most important features is that their coupling to other particles is suppressed by a la... [Phys. Rev. D 98, 023539] Published Fri Jul 27, 2018

Schlagwort(e): Cosmology

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Topological invariants in dissipative extensions of the Su-Schrieffer-Heeger model (2018)

Felix Dangel, Marcel Wagner, Holger Cartarius, Jörg Main, and Günter Wunner

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Felix Dangel, Marcel Wagner, Holger Cartarius, Jörg Main, and Günter Wunner We investigate dissipative extensions of the Su-Schrieffer-Heeger model with regard to different approaches of modeling dissipation. In doing so, we use two distinct frameworks to describe the gain and loss of particles: One uses Lindblad operators within the scope of Lindblad master equations, and ... [Phys. Rev. A 98, 013628] Published Fri Jul 27, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

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Phase transitions of a two-dimensional deformed Affleck-Kennedy-Lieb-Tasaki model (2018)

Nicholas Pomata, Ching-Yu Huang, and Tzu-Chieh Wei

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Nicholas Pomata, Ching-Yu Huang, and Tzu-Chieh Wei We study spin-2 deformed-AKLT models on the square lattice, specifically a two-parameter family of O ( 2 ) -symmetric ground-state wave functions as defined by Niggemann, Klümper, and Zittartz, who found previously that the phase diagram consists of a Néel-ordered phase and a disordered phase which cont... [Phys. Rev. B 98, 014432] Published Fri Jul 27, 2018

Schlagwort(e): Magnetism

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Thema: Physik

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Twisted skyrmions at domain boundaries and the method of image skyrmions (2018)

Huanhuan Yang, C. Wang, Xiaofan Wang, X. S. Wang, Yunshan Cao, and Peng Yan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Huanhuan Yang, C. Wang, Xiaofan Wang, X. S. Wang, Yunshan Cao, and Peng Yan We predict a twisted skyrmion structure at the boundary of two antiparallel magnetic domains stabilized by a (synthetic or crystal) antiferromagnetic coupling on the border. Through this novel state, skyrmions with opposite polarities can be freely switched between each other by spin-polarized elect... [Phys. Rev. B 98, 014433] Published Fri Jul 27, 2018

Schlagwort(e): Magnetism

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Many-body stabilization of a resonant $p$-wave Fermi gas in one dimension (2018)

Lei Pan, Shu Chen, and Xiaoling Cui

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Lei Pan, Shu Chen, and Xiaoling Cui Using the asymptotic Bethe ansatz, we study the stabilization problem of the one-dimensional spin-polarized Fermi gas confined in a hard-wall potential with a tunable p -wave scattering length and finite effective range. We find that the interplay of two factors, i.e., the finite interaction range an... [Phys. Rev. A 98, 011603(R)] Published Mon Jul 30, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Ferromagnetic resonance in core-shell nanoparticles with multitype exchange anisotropy (2018)

I. S. Poperechny and Yu. L. Raikher

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): I. S. Poperechny and Yu. L. Raikher A phenomenological model for magnetodynamics of core-shell nanoparticles is presented. The term core-shell implies, prima facie , that the spin structures (phases) of the particle components are different, no matter whether or not they are chemically identical. The model takes in two main assumptions... [Phys. Rev. B 98, 014434] Published Mon Jul 30, 2018

Schlagwort(e): Magnetism

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Inclusive ${h}_{c}$ production and energy spectrum from ${e}^{+}{e}^{−}$ annihilation at a super $B$ factory (2018)

Qing-Feng Sun, Yu Jia, Xiaohui Liu, and Ruilin Zhu

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Qing-Feng Sun, Yu Jia, Xiaohui Liu, and Ruilin Zhu We calculate the next-to-leading order (NLO) radiative correction to the color-octet h c inclusive production in e + e − annihilation at a super B factory, within the nonrelativistic QCD factorization framework. The analytic expression for the NLO short-distance coefficient (SDC) accompanying the color-... [Phys. Rev. D 98, 014039] Published Mon Jul 30, 2018

Schlagwort(e): Strong Interactions

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Magnetic reversal in $\mathrm{S}{\mathrm{r}}_{4}\mathrm{R}{\mathrm{u}}_{3}{\mathrm{O}}_{10}$ nanosheets probed by anisotropic magnetoresistance (2018)

Yan Liu, Weiwei Chu, Jiyong Yang, Guoqiang Liu, Haifeng Du, Wei Ning, Langsheng Ling, Wei Tong, Zhe Qu, Gang Cao, Zhuan Xu, and Mingliang Tian

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Yan Liu, Weiwei Chu, Jiyong Yang, Guoqiang Liu, Haifeng Du, Wei Ning, Langsheng Ling, Wei Tong, Zhe Qu, Gang Cao, Zhuan Xu, and Mingliang Tian The origin of the unusual second magnetic transition at a temperature T M in the ruthenate S r 4 R u 3 O 10 remains elusive. Here, we have investigated the thickness-dependent anisotropic magnetoresistance of S r 4 R u 3 O 10 nanosheets, and clearly found that the sign of the magnetoresistance (MR) presents an unu... [Phys. Rev. B 98, 024425] Published Wed Jul 25, 2018

Schlagwort(e): Magnetism

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Born-Bogoliubov-Green-Kirkwood-Yvon hierarchy for ultracold bosonic systems (2018)

Sven Krönke and Peter Schmelcher

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Sven Krönke and Peter Schmelcher We establish a theoretical framework for exploring the quantum dynamics of finite ultracold bosonic ensembles based on the Born-Bogoliubov-Green-Kirkwood-Yvon (BBGKY) hierarchy for equations of motion for few-particle reduced density matrices (RDMs). The theory applies to zero as well as low tempera... [Phys. Rev. A 98, 013629] Published Mon Jul 30, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Chiral skyrmions in an anisotropy gradient (2018)

R. Tomasello, S. Komineas, G. Siracusano, M. Carpentieri, and G. Finocchio

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): R. Tomasello, S. Komineas, G. Siracusano, M. Carpentieri, and G. Finocchio A strategy to drive skyrmion motion by a combination of an anisotropy gradient and spin-Hall effect has recently been demonstrated. Here, we study the fundamental properties of this type of motion by combining micromagnetic simulations and a generalized Thiele's equation. We find that the anisotropy... [Phys. Rev. B 98, 024421] Published Tue Jul 24, 2018

Schlagwort(e): Magnetism

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Higgs field-curvature coupling and postinflationary vacuum instability (2018)

Daniel G. Figueroa, Arttu Rajantie, and Francisco Torrenti

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Daniel G. Figueroa, Arttu Rajantie, and Francisco Torrenti We study the postinflationary dynamics of the Standard Model (SM) Higgs field in the presence of a nonminimal coupling ξ | Φ | 2 R to gravity, both with and without the electroweak gauge fields coupled to the Higgs field. We assume a minimal scenario in which inflation and reheating are caused by chaotic... [Phys. Rev. D 98, 023532] Published Tue Jul 24, 2018

Schlagwort(e): Cosmology

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Mitigating foreground biases in CMB lensing reconstruction using cleaned gradients (2018)

Mathew S. Madhavacheril and J. Colin Hill

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Mathew S. Madhavacheril and J. Colin Hill Reconstructed maps of the lensing convergence of the cosmic microwave background (CMB) will play a major role in precision cosmology in coming years. CMB lensing maps will enable calibration of the masses of high-redshift galaxy clusters and will yield precise measurements of the growth of cosmic st... [Phys. Rev. D 98, 023534] Published Tue Jul 24, 2018

Schlagwort(e): Cosmology

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Domain formation in rectangular magnetic nanoparticle assemblies (2018)

Alexander Fabian, Michael Czerner, Christian Heiliger, Matthias T. Elm, Detlev M. Hofmann, and Peter J. Klar

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-02

Beschreibung: Author(s): Alexander Fabian, Michael Czerner, Christian Heiliger, Matthias T. Elm, Detlev M. Hofmann, and Peter J. Klar Rectangular assemblies with different aspect ratios were prepared with spherical magnetite nanoparticles (diameter d = 20 nm ) on lithographically patterned substrates using a variant of the meniscus force deposition method. The aspect ratio (width:length) of the rectangular assemblies was varied from v... [Phys. Rev. B 98, 054401] Published Wed Aug 01, 2018

Schlagwort(e): Magnetism

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Detecting end states of topological quantum paramagnets via spin Hall noise spectroscopy (2018)

Darshan G. Joshi, Andreas P. Schnyder, and So Takei

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-02

Beschreibung: Author(s): Darshan G. Joshi, Andreas P. Schnyder, and So Takei We theoretically study the equilibrium spin current fluctuations and the corresponding charge noise generated by the inverse spin Hall effect (ISHE) in a metal with strong spin-orbit coupling deposited on top of a quantum paramagnet. It is shown that the charge noise power spectra measured along dif... [Phys. Rev. B 98, 064401] Published Wed Aug 01, 2018

Schlagwort(e): Magnetism

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Net baryon-number fluctuations in magnetized quark matter (2018)

Márcio Ferreira, Pedro Costa, and Constança Providência

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-08-04

Beschreibung: Author(s): Márcio Ferreira, Pedro Costa, and Constança Providência The kurtosis and skewness of net baryon-number fluctuations are studied for the magnetized phase diagram of three-flavor quark matter within the Polyakov extended Nambu–Jona-Lasinio model. Two models with magnetic catalysis and inverse magnetic catalysis are considered. Special attention is given to... [Phys. Rev. D 98, 034003] Published Fri Aug 03, 2018

Schlagwort(e): Strong Interactions

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Possible interpretation of the newly observed $\mathrm{Ω}(2012)$ state (2018)

Li-Ye Xiao and Xian-Hui Zhong

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-08-04

Beschreibung: Author(s): Li-Ye Xiao and Xian-Hui Zhong Inspired by the newly observed Ω ( 2012 ) state at Belle II, we investigate the two-body strong decays of Ω baryons up to N = 2 shell within the chiral quark model. Our results indicate that (i) the newly observed Ω ( 2012 ) state could be assigned to the spin-parity J P = 3 / 2 − state | 70 , 2 10 , 1 , 1 , 3 2 − ⟩ and the e... [Phys. Rev. D 98, 034004] Published Fri Aug 03, 2018

Schlagwort(e): Strong Interactions

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Nanoscale magnetic localization in exchange strength modulated ferromagnets (2018)

B. J. Kirby, L. Fallarino, P. Riego, B. B. Maranville, Casey W. Miller, and A. Berger

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-04

Beschreibung: Author(s): B. J. Kirby, L. Fallarino, P. Riego, B. B. Maranville, Casey W. Miller, and A. Berger Although ferromagnetism is in general a long-range collective phenomenon, it is possible to induce local spatial variations of magnetic properties in ferromagnetic materials. For example, systematic variation of the exchange coupling strength can be used to create systems that behave as if they are ... [Phys. Rev. B 98, 064404] Published Fri Aug 03, 2018

Schlagwort(e): Magnetism

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Application of the complex Kohn variational method to attosecond spectroscopy (2018)

N. Douguet, B. I. Schneider, and L. Argenti

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): N. Douguet, B. I. Schneider, and L. Argenti The complex Kohn variational method is extended to compute light-driven electronic transitions between continuum wave functions in atomic and molecular systems. This development enables the study of multiphoton processes in the perturbative regime for arbitrary light polarization. As a proof of prin... [Phys. Rev. A 98, 023403] Published Mon Aug 06, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Spin-orbit-coupled soliton in a random potential (2018)

Sh. Mardonov, V. V. Konotop, B. A. Malomed, M. Modugno, and E. Ya. Sherman

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Sh. Mardonov, V. V. Konotop, B. A. Malomed, M. Modugno, and E. Ya. Sherman We investigate theoretically the dynamics of a spin-orbit-coupled soliton formed by a self-interacting Bose-Einstein condensate immersed in a random potential, in the presence of an artificial magnetic field. We find that, due to the anomalous spin-dependent velocity, the synthetic Zeeman coupling c... [Phys. Rev. A 98, 023604] Published Mon Aug 06, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Laser cooling by sawtooth-wave adiabatic passage (2018)

John P. Bartolotta, Matthew A. Norcia, Julia R. K. Cline, James K. Thompson, and Murray J. Holland

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): John P. Bartolotta, Matthew A. Norcia, Julia R. K. Cline, James K. Thompson, and Murray J. Holland We provide a theoretical analysis for a recently demonstrated cooling method. Two-level particles undergo successive adiabatic transfers upon interaction with counterpropagating laser beams that are repeatedly swept over the transition frequency. We show that particles with narrow linewidth transiti... [Phys. Rev. A 98, 023404] Published Mon Aug 06, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Homogeneous and heterogeneous nucleation of skyrmions in thin layers of cubic helimagnets (2018)

A. O. Leonov and K. Inoue

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): A. O. Leonov and K. Inoue Formation of isolated chiral skyrmions by homogeneous and heterogeneous nucleation has been studied in thin layers of cubic helimagnets via elongation of torons and chiral bobbers, respectively. Both torons and bobbers are localized in three dimensions, contain singularities, and, according to the t... [Phys. Rev. B 98, 054404] Published Mon Aug 06, 2018

Schlagwort(e): Magnetism

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Spin-wave dynamics in artificial anti-spin-ice systems: Experimental and theoretical investigations (2018)

S. Mamica, X. Zhou, A. Adeyeye, M. Krawczyk, and G. Gubbiotti

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): S. Mamica, X. Zhou, A. Adeyeye, M. Krawczyk, and G. Gubbiotti Reversed structures of artificial spin-ice systems, where elongated holes with elliptical shape (antidots) are arranged into a square array with two orthogonal sublattices, are referred to as antisquared spin ice. Using Brillouin light-scattering spectroscopy and plane-wave-method calculations, we i... [Phys. Rev. B 98, 054405] Published Mon Aug 06, 2018

Schlagwort(e): Magnetism

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Metamagnetism and zero-scale-factor universality in the two-dimensional $J\text{−}Q$ model (2018)

Adam Iaizzi, Kedar Damle, and Anders W. Sandvik

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Adam Iaizzi, Kedar Damle, and Anders W. Sandvik Using a combination of quantum Monte Carlo and exact methods, we study the field-driven saturation transition of the two-dimensional J − Q model, in which the antiferromagnetic Heisenberg exchange ( J ) coupling competes with an additional four-spin interaction ( Q ) that favors valence-bond solid order. ... [Phys. Rev. B 98, 064405] Published Mon Aug 06, 2018

Schlagwort(e): Magnetism

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Observation of spontaneous ferriquadrupolar order in $\mathrm{KDy}{({\mathrm{MoO}}_{4})}_{2}$ (2018)

A. A. Zvyagin, K. Kutko, D. Kamenskyi, A. V. Peschanskii, S. Poperezhai, and N. M. Nesterenko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): A. A. Zvyagin, K. Kutko, D. Kamenskyi, A. V. Peschanskii, S. Poperezhai, and N. M. Nesterenko Using Raman and infrared spectroscopies, spontaneous ferriquadrupolar ordering has been observed in the rare-earth-based system KDy ( MoO 4 ) 2 . Ordered quadrupoles in the electron subsystem attend nonequivalent distortions of rare-earth ions in the ordered phase. A mean-field theory explaining the onset... [Phys. Rev. B 98, 064406] Published Mon Aug 06, 2018

Schlagwort(e): Magnetism

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Noncollinear magnetism in nanosized cobalt chromite (2018)

D. Zákutná, J. Vlček, P. Fitl, K. Nemkovski, D. Honecker, D. Nižňanský, and S. Disch

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): D. Zákutná, J. Vlček, P. Fitl, K. Nemkovski, D. Honecker, D. Nižňanský, and S. Disch Using a combination of neutron diffraction with XYZ polarization analysis and magnetization measurements, the noncollinear magnetism in nanosized cobalt chromite, a potential multiferroic material, is revealed. For noninteracting 26.9(1) nm nanoparticles, a bulklike behavior is identified, including... [Phys. Rev. B 98, 064407] Published Mon Aug 06, 2018

Schlagwort(e): Magnetism

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Orbital magnetic quadrupole moment and nonlinear anomalous thermoelectric transport (2018)

Yang Gao and Di Xiao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Yang Gao and Di Xiao We present a microscopic theory of the orbital magnetic quadrupole moment density Q i j in periodic crystals with combined time-reversal ( T ) and inversion ( I ) symmetry. We obtain a gauge-invariant expression with a clear physical interpretation and demonstrate the typical behavior of Q i j in a minimal ... [Phys. Rev. B 98, 060402(R)] Published Mon Aug 06, 2018

Schlagwort(e): Magnetism

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Lagrangian theory of structure formation in relativistic cosmology. V. Irrotational fluids (2018)

Yong-Zhuang Li, Pierre Mourier, Thomas Buchert, and David L. Wiltshire

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): Yong-Zhuang Li, Pierre Mourier, Thomas Buchert, and David L. Wiltshire We extend the general relativistic Lagrangian perturbation theory, recently developed for the formation of cosmic structures in a dust continuum, to the case of model universes containing a single fluid with a single-valued analytic equation of state. Using a coframe-based perturbation approach, we ... [Phys. Rev. D 98, 043507] Published Tue Aug 07, 2018

Schlagwort(e): Cosmology

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Imprints of gravitational lensing in the Planck cosmic microwave background data at the location of $WISE×\mathrm{SCOS}$ galaxies (2018)

Srinivasan Raghunathan, Federico Bianchini, and Christian L. Reichardt

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Srinivasan Raghunathan, Federico Bianchini, and Christian L. Reichardt We detect weak gravitational lensing of the cosmic microwave background at the location of the W I S E × SuperCOSMOS ( W I S E × SCOS ) galaxies using the publicly available Planck lensing convergence map. By stacking the lensing convergence map at the position of 12.4 million galaxies in the redshift range 0.1 ... [Phys. Rev. D 98, 043506] Published Mon Aug 06, 2018

Schlagwort(e): Cosmology

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Inflation in an effective gravitational model and asymptotic safety (2018)

Lei-Hua Liu, Tomislav Prokopec, and Alexei A. Starobinsky

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Lei-Hua Liu, Tomislav Prokopec, and Alexei A. Starobinsky We consider an inflationary model motivated by quantum effects of gravitational and matter fields near the Planck scale. Our Lagrangian is a resummed version of the effective Lagrangian recently obtained by Demmel, Saueressig, and Zanusso [A proper fixed functional for four-dimensional quantum Einst... [Phys. Rev. D 98, 043505] Published Mon Aug 06, 2018

Schlagwort(e): Cosmology

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Testing the cosmic anisotropy with supernovae data: Hemisphere comparison and dipole fitting (2018)

Hua-Kai Deng and Hao Wei

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-12

Beschreibung: Author(s): Hua-Kai Deng and Hao Wei The cosmological principle is one of the cornerstones in modern cosmology. It assumes that the universe is homogeneous and isotropic on cosmic scales. Both the homogeneity and the isotropy of the universe should be tested carefully. In the present work, we are interested in probing the possible pref... [Phys. Rev. D 97, 123515] Published Mon Jun 11, 2018

Schlagwort(e): Cosmology

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Magnetic anisotropy in permalloy: Hidden quantum mechanical features (2018)

Debora C. M. Rodrigues, Angela B. Klautau, Alexander Edström, Jan Rusz, Lars Nordström, Manuel Pereiro, Björgvin Hjörvarsson, and Olle Eriksson

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Debora C. M. Rodrigues, Angela B. Klautau, Alexander Edström, Jan Rusz, Lars Nordström, Manuel Pereiro, Björgvin Hjörvarsson, and Olle Eriksson By means of relativistic, first principles calculations, we investigate the microscopic origin of the vanishingly low magnetic anisotropy of Permalloy, here proposed to be intrinsically related to the local symmetries of the alloy. It is shown that the local magnetic anisotropy of individual atoms i... [Phys. Rev. B 97, 224402] Published Mon Jun 04, 2018

Schlagwort(e): Magnetism

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Hadronic superpartners from a superconformal and supersymmetric algebra (2018)

Marina Nielsen and Stanley J. Brodsky

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Marina Nielsen and Stanley J. Brodsky Through the embedding of superconformal quantum mechanics into AdS space, it is possible to construct an effective supersymmetric QCD light-front Hamiltonian for hadrons, which includes a spin-spin interaction between the hadronic constituents. A specific breaking of conformal symmetry determines a ... [Phys. Rev. D 97, 114001] Published Mon Jun 04, 2018

Schlagwort(e): Strong Interactions

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Model independent inference of the expansion history and implications for the growth of structure (2018)

Shahab Joudaki, Manoj Kaplinghat, Ryan Keeley, and David Kirkby

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Shahab Joudaki, Manoj Kaplinghat, Ryan Keeley, and David Kirkby A “crisis in cosmology” is lurking in recent measurements of the Hubble constant H 0 (the current expansion rate of the Universe), caused by a tension between direct observations through distance measurements and an inferred value, computed with the standard model of cosmology ( Λ CDM) from CMB data. The latter involves an approx. 13 billion years time evolution. The authors use statistical methods to analyze different available data sets from different kind of observations that carry information about different moments from the evolution of the Universe, to determine H 0 in a model independent way, making only minimal basic assumptions, and find that the tension with direct observation of H 0 persists. [Phys. Rev. D 97, 123501] Published Mon Jun 04, 2018

Schlagwort(e): Cosmology

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Intrinsic hysteresis due to the surface barrier for chiral solitons in monoaxial chiral helimagnets (2018)

M. Shinozaki, Y. Masaki, R. Aoki, Y. Togawa, and Y. Kato

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-14

Beschreibung: Author(s): M. Shinozaki, Y. Masaki, R. Aoki, Y. Togawa, and Y. Kato Chiral solitons in monoaxial chiral magnets undergo a surface barrier, which is analogous to the Bean-Livingston barrier in type-II superconductors. The authors argue here that the surface barrier is the main mechanism for large hysteresis observed in magnetoresistance (MR) measurements on micrometer-sized samples of CrNb 3 S 6 . In the MR hysteresis, a conspicuous jump is observed at the field H b for decreasing fields. Experimental results for H b ∼ 0 . 4 H c (with thermodynamic critical field H c ) and the theoretical result H b / H c = 4 / π 2 are in good agreement with each other. The surface barrier is regarded as a common property of systems (superconductors, chiral magnets, and chiral liquid crystals) that exhibit continuous transitions of the nucleation type. [Phys. Rev. B 97, 214413] Published Wed Jun 13, 2018

Schlagwort(e): Magnetism

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Analytical approach to Coulomb focusing in strong-field ionization. I. Nondipole effects (2018)

Jiří Daněk, Karen Z. Hatsagortsyan, and Christoph H. Keitel

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-14

Beschreibung: Author(s): Jiří Daněk, Karen Z. Hatsagortsyan, and Christoph H. Keitel The role of the Coulomb potential of the atomic core for the creation of caustics in the photoelectron momentum distribution for tunneling ionization in a linearly polarized strong laser field, commonly termed Coulomb focusing, is investigated within classical theory beyond the dipole approximation.... [Phys. Rev. A 97, 063409] Published Wed Jun 13, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Calculating the transport properties of magnetic materials from first principles including thermal and alloy disorder, noncollinearity, and spin-orbit coupling (2018)

Anton A. Starikov, Yi Liu, Zhe Yuan, and Paul J. Kelly

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-14

Beschreibung: Author(s): Anton A. Starikov, Yi Liu, Zhe Yuan, and Paul J. Kelly A density functional theory based two-terminal scattering formalism that includes spin-orbit coupling and spin noncollinearity is described. An implementation using tight-binding muffin-tin orbitals combined with extensive use of sparse matrix techniques allows a wide variety of inhomogeneous struct... [Phys. Rev. B 97, 214415] Published Wed Jun 13, 2018

Schlagwort(e): Magnetism

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Postinflationary scalar tensor cosmology and inflationary parameters (2018)

Anshuman Maharana and Ivonne Zavala

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-14

Beschreibung: Author(s): Anshuman Maharana and Ivonne Zavala Scalar fields provide attractive modifications of pre-BBN cosmology, which have interesting implications for dark matter abundances. We analyze the effect of these modifications on the number of e -foldings between the horizon exit of cosmic microwave background modes and the end of inflation ( N k ) , a... [Phys. Rev. D 97, 123518] Published Wed Jun 13, 2018

Schlagwort(e): Cosmology

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Field dependence of nonreciprocal magnons in chiral MnSi (2018)

T. Weber, J. Waizner, G. S. Tucker, R. Georgii, M. Kugler, A. Bauer, C. Pfleiderer, M. Garst, and P. Böni

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-06

Beschreibung: Author(s): T. Weber, J. Waizner, G. S. Tucker, R. Georgii, M. Kugler, A. Bauer, C. Pfleiderer, M. Garst, and P. Böni Spin waves in chiral magnetic materials are strongly influenced by the Dzyaloshinskii-Moriya interaction, resulting in intriguing phenomena like nonreciprocal magnon propagation and magnetochiral dichroism. Here, we study the nonreciprocal magnon spectrum of the archetypical chiral magnet MnSi and i... [Phys. Rev. B 97, 224403] Published Tue Jun 05, 2018

Schlagwort(e): Magnetism

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Form factors of the ${d}^{*}(2380)$ resonance (2018)

Yubing Dong, Pengnian Shen, and Zongye Zhang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-06

Beschreibung: Author(s): Yubing Dong, Pengnian Shen, and Zongye Zhang In order to explore the possible physical quantities for judging different structures of the newly observed resonance d * ( 2380 ) , we study its electromagnetic form factors. In addition to the electric charge monopole C 0 , we calculate its electric quadrupole E 2 , magnetic dipole M 1 , and magnetic octupol... [Phys. Rev. D 97, 114002] Published Tue Jun 05, 2018

Schlagwort(e): Strong Interactions

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Post-Ehrenfest many-body quantum interferences in ultracold atoms far out of equilibrium (2018)

Steven Tomsovic, Peter Schlagheck, Denis Ullmo, Juan-Diego Urbina, and Klaus Richter

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-15

Beschreibung: Author(s): Steven Tomsovic, Peter Schlagheck, Denis Ullmo, Juan-Diego Urbina, and Klaus Richter Far out-of-equilibrium many-body quantum dynamics in isolated systems necessarily generates interferences beyond an Ehrenfest timescale, where quantum and classical expectation values diverge. Of great recent interest is the role these interferences play in the spreading of quantum information acros... [Phys. Rev. A 97, 061606(R)] Published Thu Jun 14, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Intrapulse impact processes in dense-gas femtosecond laser filamentation (2018)

Dmitri A. Romanov, Xiaohui Gao, Alexander L. Gaeta, and Robert J. Levis

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-15

Beschreibung: Author(s): Dmitri A. Romanov, Xiaohui Gao, Alexander L. Gaeta, and Robert J. Levis The processes of energy gain and redistribution in a dense gas subject to an intense ultrashort laser pulse are investigated theoretically for the case of high-pressure argon. The electrons released via strong-field ionization and driven by an oscillating laser field collide with neutral neighbor at... [Phys. Rev. A 97, 063411] Published Thu Jun 14, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Nonswitchable polarization and magnetoelectric coupling in the high-pressure synthesized doubly ordered perovskites $\mathrm{NaYMnW}{\mathrm{O}}_{6}$ and $\mathrm{NaHoCoW}{\mathrm{O}}_{6}$ (2018)

Chandan De and A. Sundaresan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-15

Beschreibung: Author(s): Chandan De and A. Sundaresan The doubly ordered perovskites Na L n MnW O 6 ( L n = La , Nd, and Tb), Na L n FeW O 6 ( L n = La and Nd), and Na L n CoW O 6 ( L n = Sm − Er , Yb, and Y) have been reported to be potential multiferroics because of their polar crystal structure ( P 2 1 ) and antiferromagnetic ordering of the transition-metal ions at low temperatures.... [Phys. Rev. B 97, 214418] Published Thu Jun 14, 2018

Schlagwort(e): Magnetism

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Driving-laser ellipticity dependence of high-order harmonic generation in graphene (2018)

Candong Liu, Yinghui Zheng, Zhinan Zeng, and Ruxin Li

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): Candong Liu, Yinghui Zheng, Zhinan Zeng, and Ruxin Li High-order harmonic generation in graphene driven by the elliptically polarized midinfrared driving pulse is theoretically investigated by solving the two-band semiconductor Bloch equation in the Houston basis under the tight-binding approximation. It is found that the maximal harmonic yield occurs ... [Phys. Rev. A 97, 063412] Published Fri Jun 15, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Nonlocal pair correlations in Lieb-Liniger gases: A unified nonperturbative approach from weak degeneracy to high temperatures (2018)

Benjamin Geiger, Quirin Hummel, Juan Diego Urbina, and Klaus Richter

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): Benjamin Geiger, Quirin Hummel, Juan Diego Urbina, and Klaus Richter We present analytical results for the nonlocal pair correlations in one-dimensional bosonic systems with repulsive contact interactions that are uniformly valid from the classical regime of high temperatures down to weak quantum degeneracy entering the regime of ultralow temperatures. By using the i... [Phys. Rev. A 97, 063612] Published Fri Jun 15, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Wigner function of noninteracting trapped fermions (2018)

David S. Dean, Pierre Le Doussal, Satya N. Majumdar, and Grégory Schehr

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): David S. Dean, Pierre Le Doussal, Satya N. Majumdar, and Grégory Schehr The Wigner function is studied for trapped noninteracting fermions. Universal scaling behavior of the function, independent of the trapping potential and the spatial dimension, is found at both zero and finite temperatures. [Phys. Rev. A 97, 063614] Published Fri Jun 15, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Dimer-dimer zero crossing and dilute dimerized liquid in a one-dimensional mixture (2018)

A. Pricoupenko and D. S. Petrov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): A. Pricoupenko and D. S. Petrov We consider the system of dimers formed in a one-dimensional mass-balanced Bose-Bose mixture of species σ = ↑ , ↓ with attractive interspecies and repulsive intraspecies contact interactions. In the plane parametrized by the ratios of the coupling constants g ↑ ↑ / | g ↑ ↓ | and g ↓ ↓ / | g ↑ ↓ | we trace out the curve... [Phys. Rev. A 97, 063616] Published Fri Jun 15, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Electric and magnetic gating of Rashba-active weak links (2018)

A. Aharony, O. Entin-Wohlman, M. Jonson, and R. I. Shekhter

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): A. Aharony, O. Entin-Wohlman, M. Jonson, and R. I. Shekhter In a one-dimensional weak-link wire the spin-orbit interaction (SOI) alone cannot generate a nonzero spin current. We show that a Zeeman field acting in the wire in conjunction with the Rashba SOI there does yield such a current, whose magnitude and direction depend on the direction of the field. Wh... [Phys. Rev. B 97, 220404(R)] Published Fri Jun 15, 2018

Schlagwort(e): Magnetism

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Magnetism and the phase diagram of ${\mathrm{MnSb}}_{2}{\mathrm{O}}_{6}$ (2018)

C. Koo, J. Werner, M. Tzschoppe, M. Abdel-Hafiez, P. K. Biswas, R. Sarkar, H.-H. Klauss, G. V. Raganyan, E. A. Ovchenkov, A. Yu. Nikulin, A. N. Vasiliev, E. A. Zvereva, and R. Klingeler

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): C. Koo, J. Werner, M. Tzschoppe, M. Abdel-Hafiez, P. K. Biswas, R. Sarkar, H.-H. Klauss, G. V. Raganyan, E. A. Ovchenkov, A. Yu. Nikulin, A. N. Vasiliev, E. A. Zvereva, and R. Klingeler Static and dynamic magnetic properties of P 3 ¯ 1 m -phase MnSb 2 O 6 have been studied by means of muon-spin relaxation ( μ SR ), high-frequency electron-spin resonance (HF-ESR), specific heat, and magnetization studies in magnetic fields up to 25 T. The data imply onset of long-range antiferromagnetic order ... [Phys. Rev. B 97, 224416] Published Fri Jun 15, 2018

Schlagwort(e): Magnetism

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Revisiting the Floquet-Bloch theory for an exactly solvable model of one-dimensional crystals in strong laser fields (2018)

Tatsuhiko N. Ikeda

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Tatsuhiko N. Ikeda We revisit the Floquet-Bloch eigenstates of a one-dimensional electron gas in the presence of the periodic Kronig-Penney potential and an oscillating electric field. Considering the appropriate boundary conditions for the wave function and its derivative, we derive the determining equations for the ... [Phys. Rev. A 97, 063413] Published Mon Jun 18, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Scaling of nonlinear susceptibilities in an artificial permalloy honeycomb lattice (2018)

A. Dahal, Y. Chen, B. Summers, and D. K. Singh

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): A. Dahal, Y. Chen, B. Summers, and D. K. Singh Two-dimensional artificial magnetic honeycomb lattice is predicted to manifest several magnetic phase transitions as a function of reducing temperature. We have performed the analysis of nonlinear susceptibility to explore the equilibrium nature of phase transition in artificial honeycomb lattice of... [Phys. Rev. B 97, 214420] Published Mon Jun 18, 2018

Schlagwort(e): Magnetism

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Spontaneous distortion via the appearance of ferromagnetism in Pd ultrathin films: Observation of an inverse mechanism for the Stoner criterion (2018)

Shunsuke Sakuragi, Hiroo Tajiri, Hiroyuki Kageshima, and Tetsuya Sato

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Shunsuke Sakuragi, Hiroo Tajiri, Hiroyuki Kageshima, and Tetsuya Sato We study the crystal structure of Pd(100) ultrathin films, which show ferromagnetism induced by the quantum confinement effect, using in situ x-ray crystal truncation rod measurement and density functional calculation. The energy gain from the appearance of ferromagnetism in Pd results in flatter an... [Phys. Rev. B 97, 214421] Published Mon Jun 18, 2018

Schlagwort(e): Magnetism

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Strong anomalous Nernst effect in collinear magnetic Weyl semimetals without net magnetic moments (2018)

Jonathan Noky, Jacob Gayles, Claudia Felser, and Yan Sun

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Jonathan Noky, Jacob Gayles, Claudia Felser, and Yan Sun We predict a large anomalous Nernst effect in the inverse Heusler compensated ferrimagnets Ti 2 Mn X ( X = Al , Ga, and In) with vanishing net magnetic moments. Though the net magnetic moment is zero, the Weyl points in these systems lead to a large anomalous Nernst conductivity (ANC) due to the lack of a ... [Phys. Rev. B 97, 220405(R)] Published Mon Jun 18, 2018

Schlagwort(e): Magnetism

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Spin glass in the bond-diluted ${J}_{1}−{J}_{2}$ Ising model on the square lattice (2018)

Yining Xu and Dao-Xin Yao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Yining Xu and Dao-Xin Yao We use Monte Carlo (MC) methods to simulate a two-dimensional (2D) bond-diluted Ising model on the square lattice, which has frustration between nearest-neighbor interaction J 1 and next-nearest-neighbor interaction J 2 . In this study, we use the parallel tempering algorithm to study thermodynamics fo... [Phys. Rev. B 97, 224419] Published Mon Jun 18, 2018

Schlagwort(e): Magnetism

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Finite-barrier correction for the ferromagnetic resonance frequency of nanomagnets with various magnetocrystalline anisotropies (2018)

Yuri P. Kalmykov, Serguey V. Titov, William T. Coffey, and William J. Dowling

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Yuri P. Kalmykov, Serguey V. Titov, William T. Coffey, and William J. Dowling Finite-barrier corrections to the ferromagnetic resonance (FMR) frequency of nanomagnets are obtained in closed integral form from the undamped deterministic equation of motion of the magnetization by averaging the precession frequency as expressed by elliptic functions over all possible precessiona... [Phys. Rev. B 97, 224418] Published Mon Jun 18, 2018

Schlagwort(e): Magnetism

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Production of ${χ}_{c}$ pairs with large rapidity separation in ${k}_{T}$ factorization (2018)

Anna Cisek, Wolfgang Schäfer, and Antoni Szczurek

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Anna Cisek, Wolfgang Schäfer, and Antoni Szczurek We calculate the production of pairs of χ c J mesons with all possible combinations of J = 0 , 1, 2. The production mechanism which we consider is the crossed-channel gluon exchange in the gluon-gluon fusion reaction, the mechanism relevant for large rapidity separations between χ c mesons. The salient fe... [Phys. Rev. D 97, 114018] Published Mon Jun 18, 2018

Schlagwort(e): Strong Interactions

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Coupling of magnetic order and charge transport in the candidate Dirac semimetal ${\mathrm{EuCd}}_{2}{\mathrm{As}}_{2}$ (2018)

M. C. Rahn, J.-R. Soh, S. Francoual, L. S. I. Veiga, J. Strempfer, J. Mardegan, D. Y. Yan, Y. F. Guo, Y. G. Shi, and A. T. Boothroyd

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-21

Beschreibung: Author(s): M. C. Rahn, J.-R. Soh, S. Francoual, L. S. I. Veiga, J. Strempfer, J. Mardegan, D. Y. Yan, Y. F. Guo, Y. G. Shi, and A. T. Boothroyd We use resonant elastic x-ray scattering to determine the evolution of magnetic order in EuCd 2 As 2 below T N = 9.5 K, as a function of temperature and applied magnetic field. We find an A -type antiferromagnetic structure with in-plane magnetic moments, and observe dramatic magnetoresistive effects assoc... [Phys. Rev. B 97, 214422] Published Wed Jun 20, 2018

Schlagwort(e): Magnetism

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Analysis of ${\mathrm{Λ}}_{c}(2595)$, ${\mathrm{Λ}}_{c}(2625)$, ${\mathrm{Λ}}_{b}(5912)$, ${\mathrm{Λ}}_{b}(5920)$ based on a chiral partner structure (2018)

Yohei Kawakami and Masayasu Harada

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-23

Beschreibung: Author(s): Yohei Kawakami and Masayasu Harada We construct an effective hadronic model including Λ c ( 2595 ) , Λ c ( 2625 ) , Λ b ( 5912 ) , and Λ b ( 5920 ) , regarding them as chiral partners to Σ c ( 2455 ) , Σ c ( 2520 ) , Σ b , and Σ b * , respectively, with respecting the chiral symmetry and heavy-quark spin-flavor symmetry. We determine the model parameters from the expe... [Phys. Rev. D 97, 114024] Published Fri Jun 22, 2018

Schlagwort(e): Strong Interactions

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Confronting Kähler moduli inflation with CMB data (2018)

Sukannya Bhattacharya, Koushik Dutta, Mayukh Raj Gangopadhyay, and Anshuman Maharana

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-23

Beschreibung: Author(s): Sukannya Bhattacharya, Koushik Dutta, Mayukh Raj Gangopadhyay, and Anshuman Maharana In models of inflation obtained from string compactification, moduli vacuum misalignment leads to an epoch in the postinflationary history of the Universe when the energy density is dominated by cold moduli particles. This effect leads to a modification in the number of e -foldings ( N pivot ) between t... [Phys. Rev. D 97, 123533] Published Fri Jun 22, 2018

Schlagwort(e): Cosmology

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Phantom crossing dark energy in Horndeski’s theory (2018)

Jiro Matsumoto

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-06-27

Beschreibung: Author(s): Jiro Matsumoto The Λ CDM model is a remarkably successful model which is consistent with the observations of cosmic microwave background radiation (CMB), baryon acoustic oscillation (BAO), and the large scale structure of the Universe. However, the discrepancy in the value of H 0 between the local observations and P... [Phys. Rev. D 97, 123538] Published Tue Jun 26, 2018

Schlagwort(e): Cosmology

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Magnetic inhomogeneity in the copper pseudochalcogenide CuNCN (2018)

A. Zorko, P. Jeglič, M. Pregelj, D. Arčon, H. Luetkens, A. L. Tchougréeff, and R. Dronskowski

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-28

Beschreibung: Author(s): A. Zorko, P. Jeglič, M. Pregelj, D. Arčon, H. Luetkens, A. L. Tchougréeff, and R. Dronskowski Copper carbodiimide, CuNCN, is a geometrically frustrated nitrogen-based analog of cupric oxide, whose magnetism remains ambiguous. Here, we employ a combination of local-probe techniques, including Cu 63 , 65 nuclear quadrupole resonance, C 13 nuclear magnetic resonance, and muon spin rotation to show ... [Phys. Rev. B 97, 214432] Published Wed Jun 27, 2018

Schlagwort(e): Magnetism

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Dimensional crossover for the beyond-mean-field correction in Bose gases (2018)

Tobias Ilg, Jan Kumlin, Luis Santos, Dmitry S. Petrov, and Hans Peter Büchler

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Tobias Ilg, Jan Kumlin, Luis Santos, Dmitry S. Petrov, and Hans Peter Büchler We present a detailed beyond-mean-field analysis of a weakly interacting Bose gas in the crossover from three to low dimensions. We find an analytical solution for the energy and provide a clear qualitative picture of the crossover in the case of a box potential with periodic boundary conditions. We... [Phys. Rev. A 98, 051604(R)] Published Mon Nov 26, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Dissociation dynamics of the water dication following one-photon double ionization. I. Theory (2018)

Zachary L. Streeter, Frank L. Yip, Robert R. Lucchese, Benoit Gervais, Thomas N. Rescigno, and C. William McCurdy

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-27

Beschreibung: Author(s): Zachary L. Streeter, Frank L. Yip, Robert R. Lucchese, Benoit Gervais, Thomas N. Rescigno, and C. William McCurdy The measurement of the triple differential cross section in the body frame for double photoionization of a molecule can be made in principle by detecting the ionic fragments and the two photoelectrons in coincidence—but only if the dynamics and geometry of dissociation of the doubly charged molecula... [Phys. Rev. A 98, 053429] Published Mon Nov 26, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Two-color phase-of-the-phase spectroscopy with circularly polarized laser pulses (2018)

V. A. Tulsky, M. A. Almajid, and D. Bauer

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-27

Beschreibung: Author(s): V. A. Tulsky, M. A. Almajid, and D. Bauer Phase-of-the-phase spectroscopy using two-color collinearly polarized laser pulses has been introduced and experimentally applied to strong-field tunneling ionization by Skruszewicz et al. , Phys. Rev. Lett. 115 , 043001 (2015) and recently to multiphoton ionization by Almajid , J. Phys. B: At. Mol. ... [Phys. Rev. A 98, 053433] Published Mon Nov 26, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Order parameter and detection for a finite ensemble of crystallized one-dimensional dipolar bosons in optical lattices (2018)

Budhaditya Chatterjee and Axel U. J. Lode

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-27

Beschreibung: Author(s): Budhaditya Chatterjee and Axel U. J. Lode We explore the ground-state properties of a few bosons with dipole-dipole interactions in a one-dimensional optical lattice. For comparatively strong interactions, a transition from a Mott-insulator state to a crystal state occurs. Herein, we provide a detailed characterization and a detection proto... [Phys. Rev. A 98, 053624] Published Mon Nov 26, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Light-dressed states under intense optical near fields (2018)

Takashi Takeuchi, Tokuei Sako, and Katsuyuki Nobusada

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-29

Beschreibung: Author(s): Takashi Takeuchi, Tokuei Sako, and Katsuyuki Nobusada We studied the excitation dynamics of a finite quantum system with an intense optical near field (ONF) from a perspective of light-dressed states. A simple model consisting of a single electron and a nanosized short dipole source were employed. By calculating the time-dependent wave function subject... [Phys. Rev. A 98, 053440] Published Wed Nov 28, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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${Z}_{c}(4100)$ and ${Z}_{c}(4200)$ as hadrocharmonium (2018)

M. B. Voloshin

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-11-29

Beschreibung: Author(s): M. B. Voloshin It is suggested that the recently reported charged charmoniumlike resonance Z c ( 4100 ) and the previously observed Z c ( 4200 ) are two states of hadrocharmonium, related by the charm quark spin symmetry in the same way as the lowest charmonium states η c and J / ψ . Namely, the Z c ( 4100 ) is (dominantly) the η ... [Phys. Rev. D 98, 094028] Published Wed Nov 28, 2018

Schlagwort(e): Strong Interactions

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Mapping the sensitivity of hadronic experiments to nucleon structure (2018)

Bo-Ting Wang, T. J. Hobbs, Sean Doyle, Jun Gao, Tie-Jiun Hou, Pavel M. Nadolsky, and Fredrick I. Olness

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-11-29

Beschreibung: Author(s): Bo-Ting Wang, T. J. Hobbs, Sean Doyle, Jun Gao, Tie-Jiun Hou, Pavel M. Nadolsky, and Fredrick I. Olness Determinations of the proton’s collinear parton distribution functions (PDFs) are emerging with growing precision due to increased experimental activity at facilities like the Large Hadron Collider. While this copious information is valuable, the speed at which it is released makes it difficult to q... [Phys. Rev. D 98, 094030] Published Wed Nov 28, 2018

Schlagwort(e): Strong Interactions

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Hyperspherical-coordinate approach to the spectra and decay widths of hybrid quarkonia (2018)

T. Miyamoto and S. Yasui

American Physical Society (APS)

In: Physical Review D

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Beschreibung: Author(s): T. Miyamoto and S. Yasui In this paper, we consider the possibility that Y(4260), Y(4360), ψ ( 4415 ) , or X(4660) is the ground state or the first excited state of a hybrid charmonium and examine whether ϒ ( 10860 ) is the ground state or the first excited state of a hybrid bottomonium. Under a constituent quark model, we carry o... [Phys. Rev. D 98, 094027] Published Wed Nov 28, 2018

Schlagwort(e): Strong Interactions

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Resonant enhancement of an oscillating electric field in an atom (2018)

V. V. Flambaum and I. B. Samsonov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): V. V. Flambaum and I. B. Samsonov When an atom is placed into an oscillating electric field with frequency far from atomic resonances, the atomic electrons partly shield this field at the nucleus. It is conjectured that when the frequency of an electric field reaches an atomic resonance, the electric field at the nucleus may be sign... [Phys. Rev. A 98, 053437] Published Tue Nov 27, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Chiral Majorana edge states in the vortex core of a $p+ip$ Fermi superfluid (2018)

Jing-Bo Wang, Wei Yi, and Jian-Song Pan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Jing-Bo Wang, Wei Yi, and Jian-Song Pan We study Majorana modes in the vortex core of a two-dimensional p + i p Fermi superfluid interacting with a Bose-Einstein condensate. Under a repulsive s -wave contact interaction between fermions and bosons, fermions are depleted from the vortex core when the bosonic density becomes sufficiently high. ... [Phys. Rev. A 98, 053630] Published Tue Nov 27, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Longitudinal momentum of the electron at the tunneling exit (2018)

Ruihua Xu, Tao Li, and Xu Wang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Ruihua Xu, Tao Li, and Xu Wang The longitudinal momentum of the electron at the tunneling exit is a useful quantity to make sense of the tunneling ionization process. It was usually assumed to be zero from a classical argument, but recent experiments show that it must be nonzero in order to explain the measured electron momentum ... [Phys. Rev. A 98, 053435] Published Tue Nov 27, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Transient gain from ${{\mathrm{N}}_{2}}^{+}$ in light filaments (2018)

Ladan Arissian, Brian Kamer, Ali Rastegari, D. M. Villeneuve, and Jean-Claude Diels

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Ladan Arissian, Brian Kamer, Ali Rastegari, D. M. Villeneuve, and Jean-Claude Diels We present our results on the emissions from N 2 + pumped with ultrafast filaments using high-resolution pump probe. Our result shows the phase relation between transition lines at earlier delays. We show that the gain on transition lines extends beyond the time when coherence is lost. [Phys. Rev. A 98, 053438] Published Tue Nov 27, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Dielectric properties of cubic boron nitride modulated by an ultrashort laser pulse (2018)

Xiaoshuang Kong, Feng Wang, Xiaoqin Zhang, Zehui Liu, and Xiaoli Wang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Xiaoshuang Kong, Feng Wang, Xiaoqin Zhang, Zehui Liu, and Xiaoli Wang The transient dielectric responses of cubic boron nitride (cBN) modulated by an ultrashort laser pulse are introduced based on time-dependent density functional theory calculations. We theoretically investigate whether an ultrashort laser pulse is able to reversibly drive the electric and optical pr... [Phys. Rev. A 98, 053439] Published Tue Nov 27, 2018

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Cathode tube effect: Heavy quarks probing the glasma in $p$-Pb collisions (2018)

Marco Ruggieri and Santosh K. Das

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Marco Ruggieri and Santosh K. Das We study the propagation of charm quarks in the early stage of high energy proton-lead collision, considering the interaction of these quarks with the evolving glasma by means of the Wong equations. Neglecting quantum fluctuations at the initial time, the glasma is made of longitudinal fields, but t... [Phys. Rev. D 98, 094024] Published Tue Nov 27, 2018

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Impact of interface structure on magnetic exchange coupling in $\mathrm{MnBi}/{\mathrm{Fe}}_{x}{\mathrm{Co}}_{1−x}$ bilayers (2018)

S. Sabet, A. Moradabadi, S. Gorji, M. Yi, Q. Gong, M. H. Fawey, E. Hildebrandt, D. Wang, H. Zhang, B.-X. Xu, C. Kübel, and L. Alff

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-30

Beschreibung: Author(s): S. Sabet, A. Moradabadi, S. Gorji, M. Yi, Q. Gong, M. H. Fawey, E. Hildebrandt, D. Wang, H. Zhang, B.-X. Xu, C. Kübel, and L. Alff Magnetic exchange coupling behavior was investigated in MnBi/FeCo bilayer system at the hard/soft magnetic interface. We performed a combined study of cross-sectional high resolution transmission electron microscopy (HR-TEM), DFT calculations, and micromagnetic simulations to elucidate effect of int... [Phys. Rev. B 98, 174440] Published Thu Nov 29, 2018

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Nonequilibrium selection of magnetic order in a driven triangular XY antiferromagnet (2018)

Yuan Wan and Roderich Moessner

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-30

Beschreibung: Author(s): Yuan Wan and Roderich Moessner We show that a weak periodic drive removes the accidental degeneracy in the ground state of the XY antiferromagnet on the triangular lattice in a uniform static magnetic field. The underlying mechanism involves adding a small periodically modulated component to the magnetic field, which influences f... [Phys. Rev. B 98, 184432] Published Thu Nov 29, 2018

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Generating macroscopic superpositions with interacting Bose-Einstein condensates: Multimode speedups and speed limits (2018)

Samuel P. Nolan and Simon A. Haine

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): Samuel P. Nolan and Simon A. Haine We theoretically investigate the effect of multimode dynamics on the creation of macroscopic superposition states (spin-cat states) in Bose-Einstein condensates via one-axis twisting. A two-component Bose-Einstein condensate naturally realizes an effective one-axis twisting interaction, under which ... [Phys. Rev. A 98, 063606] Published Tue Dec 04, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Quantum reflection of rare-gas atoms and clusters from a grating (2018)

G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artés, and E. Pollak

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artés, and E. Pollak Quantum reflection is a universal property of atoms and molecules when scattered from surfaces in ultracold collisions. Recent experimental work has documented the quantum reflection and diffraction of He atoms, dimers, trimers, and neon atoms when reflected from a grating. Conditions for the observ... [Phys. Rev. A 98, 063604] Published Tue Dec 04, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Gauge-potential-induced rotation of spin-orbit-coupled Bose-Einstein condensates (2018)

Jingjing Jin, Wei Han, and Suying Zhang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): Jingjing Jin, Wei Han, and Suying Zhang We demonstrate that a spin-orbit-coupled Bose-Einstein condensate can be effectively rotated by adding a real magnetic field to inputting gauge angular momentum, which is distinctly different from the traditional ways of rotation by stirring or Raman laser dressing to inputting canonical angular mom... [Phys. Rev. A 98, 063607] Published Tue Dec 04, 2018

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Stability of the skyrmion lattice near the critical temperature in cubic helimagnets (2018)

Victor Laliena, Germán Albalate, and Javier Campo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-06

Beschreibung: Author(s): Victor Laliena, Germán Albalate, and Javier Campo The phase diagram of cubic helimagnets near the critical temperature is obtained from a Landau-Ginzburg model, including fluctuations to Gaussian level. The free energy is evaluated via a saddle-point expansion around the local minima of the Landau-Ginzburg functional. The local minima are computed ... [Phys. Rev. B 98, 224407] Published Wed Dec 05, 2018

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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