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1

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Kapitel Wald (2013)

Lasch, P ; Gutsch, M. ; Reyer, C. ; [weitere]

In: ???

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Publikationsdatum: 2013

Beschreibung: Simulationen mithilfe des Models 4C zu möglichen Auswirkungen der Klimaänderungen des RCP 8.5 Klimaszenariums auf Wälder in Deutschland Kiefer Fichte Eiche Buche KATASTER-BESCHREIBUNG: Auswirkungen des Klimawandels (Temperatur, Niederschlag, CO2-Gehalt der Atmosphäre) auf die Wälder KATASTER-DETAIL: Delta T (Frühjahr) + und Delta Nied (Frühjahr) -, dann Produktivität der Wälder -; Delta C02 + um 25 - 30 %, dann Produktion der Wälder + um 9 - 20%; Delta T + (an nicht wasserlimitierten Standorten), dann Produktivität der Wälder +; Delta CO2+, dann Wassernutzungseffizienz der Wälder +; Delta T (Sommer) +, dann Waldbrandgefahr +; Delta T (Sommer) + und Delta Nied (Sommer) - (= WaBi -), dann Trockenstress der Wälder + um bis zu 9% und dann Produktivität der Wälder -; Delta T (Sommer) + und Delta Nied (Sommer) -, dann Populationsdichte Kiefern-Großschädlinge +;

Schlagwort(e): Deutschland ; 20. und 21. Jahrhundert ; Boden ; Buche ; Eiche ; Fichte ; Forst ; Kiefer ; Klima ; Niederschlag ; Pflanzenschädling ; Phänologie ; Sturmschaden ; Temperatur ; Trockenheit ; Verdunstung ; Waldbrand ; Waldwachstum ; Wassermangel ; Wind ; Grundwasser ; Modell

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Die Entwicklungsgeschwindigkeit des zwischen Blüte und Vollreife inAbhängigkeit von den Witterungselementen (1950)

Müller, K.

In: Diss. Köln.

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Publikationsdatum: 1950

Beschreibung: Einfuß der Temperatur, Sonnenscheindauer und des Niederschages auf die Reifedauer des Roggens KATASTER-BESCHREIBUNG: KATASTER-DETAIL:

Schlagwort(e): Deutschland ; 1936-37 ; Ertrag ; Phänologie ; Roggen ; Trockenheit ; Wachstum ; Witterung

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Magnetic anisotropy in epitaxial Py/FeMn/Cu(001) and Py/FeMn/Ni/Cu(001) films (2013)

A. Tan, J. Li, C. A. Jenkins, E. Arenholz, A. Scholl, C. Hwang, and Z. Q. Qiu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): A. Tan, J. Li, C. A. Jenkins, E. Arenholz, A. Scholl, C. Hwang, and Z. Q. Qiu Py/FeMn/Cu(001) and Py/FeMn/Ni/Cu(001) films were grown and studied as a function of both the FeMn and the Ni thicknesses using rotating magneto-optic Kerr effect and x-ray magnetic circular dichroism. For Py/FeMn/Cu(001), we find that the FeMn antiferromagnetic order switches the sign of the Py fou... [Phys. Rev. B 88, 104404] Published Fri Sep 06, 2013

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

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Thema: Physik

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Beyond-mean-field behavior of large Bose-Einstein condensates in double-well potentials (2013)

Bettina Gertjerenken and Christoph Weiss

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): Bettina Gertjerenken and Christoph Weiss For the dynamics of Bose-Einstein condensates (BECs), differences between mean-field (Gross-Pitaevskii) physics and N -particle quantum physics often disappear if the BEC becomes larger and larger. In particular, the time scale for which both dynamics agree should thus become larger if the particle n... [Phys. Rev. A 88, 033608] Published Fri Sep 06, 2013

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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Quantum geometry with a nondegenerate vacuum: A toy model (2013)

Sandipan Sengupta

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): Sandipan Sengupta Motivated by a recent proposal (by Koslowski-Sahlmann) of a kinematical representation in loop quantum gravity (LQG) with a nondegenerate vacuum metric, we construct a polymer quantization of the parametrized massless scalar field theory on a Minkowskian cylinder. The diffeomorphism covariant kinema... [Phys. Rev. D 88, 064016] Published Mon Sep 09, 2013

Schlagwort(e): General relativity, gravitation

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

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6

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Thermodynamics of strongly correlated one-dimensional Bose gases (2013)

Andreas Vogler, Ralf Labouvie, Felix Stubenrauch, Giovanni Barontini, Vera Guarrera, and Herwig Ott

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Andreas Vogler, Ralf Labouvie, Felix Stubenrauch, Giovanni Barontini, Vera Guarrera, and Herwig Ott We investigate the thermodynamics of one-dimensional (1D) Bose gases in the strongly correlated regime. To this end, we prepare ensembles of independent 1D Bose gases in a two-dimensional optical lattice and perform high-resolution in situ imaging of the column-integrated density distribution. Using... [Phys. Rev. A 88, 031603] Published Wed Sep 11, 2013

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

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7

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Large quantum superpositions of a levitated nanodiamond through spin-optomechanical coupling (2013)

Zhang-qi Yin, Tongcang Li, Xiang Zhang, and L. M. Duan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Zhang-qi Yin, Tongcang Li, Xiang Zhang, and L. M. Duan We propose a method to generate and detect large quantum superposition states and arbitrary Fock states for the oscillational mode of an optically levitated nanocrystal diamond. The nonlinear interaction required for the generation of non-Gaussian quantum states is enabled through the spin-mechanica... [Phys. Rev. A 88, 033614] Published Wed Sep 11, 2013

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

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8

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Instability of certain bimetric and massive-gravity theories (2013)

Florian Kühnel

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-12

Beschreibung: Author(s): Florian Kühnel Stability about cosmological background solutions to the bimetric Hassan-Rosen theory is studied. The results of this analysis are presented, and it is shown that a large class of cosmological backgrounds is classically unstable. This sets serious doubts on the physical viability of the Hassan-Rosen... [Phys. Rev. D 88, 064024] Published Wed Sep 11, 2013

Schlagwort(e): General relativity, gravitation

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

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9

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Advanced magnetic anisotropy determination through isothermal remanent magnetization of nanoparticles (2013)

A. Hillion, A. Tamion, F. Tournus, O. Gaier, E. Bonet, C. Albin, and V. Dupuis

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): A. Hillion, A. Tamion, F. Tournus, O. Gaier, E. Bonet, C. Albin, and V. Dupuis We propose a theoretical framework enabling the simulation of isothermal remanence magnetization (IRM) curves, based on the Stoner-Wohlfarth model combined with the Néel macrospin relaxation time description. We show how low temperature IRM curves, which have many advantages compared to hysteresis l... [Phys. Rev. B 88, 094419] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

Print ISSN: 1098-0121

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Magnetic structure of the frustrated S=1/2 chain magnet LiCu_{2}O_{2} doped with nonmagnetic Zn (2013)

A. A. Bush, N. Büttgen, A. A. Gippius, V. N. Glazkov, W. Kraetschmer, L. A. Prozorova, L. E. Svistov, A. M. Vasiliev, and A. Zheludev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): A. A. Bush, N. Büttgen, A. A. Gippius, V. N. Glazkov, W. Kraetschmer, L. A. Prozorova, L. E. Svistov, A. M. Vasiliev, and A. Zheludev We present the results of magnetization, electron spin resonance (ESR), and nuclear magnetic resonance (NMR) measurements on single-crystal samples of the frustrated S =1/2 chain cuprate LiCu 2 O 2 doped with nonmagnetic Zn 2+ . As shown by the x-ray techniques, the crystals of Li(Cu 1− x Zn x ) 2 O 2 with x 〈0... [Phys. Rev. B 88, 104411] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

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11

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Scalar, spinor, and photon fields under relativistic cavity motion (2013)

Nicolai Friis, Antony R. Lee, and Jorma Louko

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): Nicolai Friis, Antony R. Lee, and Jorma Louko We analyze quantized scalar, spinor, and photon fields in a mechanically rigid cavity that is accelerated in Minkowski spacetime, in a recently introduced perturbative small-acceleration formalism that allows the velocities to become relativistic, with a view to applications in relativistic quantum ... [Phys. Rev. D 88, 064028] Published Fri Sep 13, 2013

Schlagwort(e): General relativity, gravitation

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12

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Chiral anomaly and classical negative magnetoresistance of Weyl metals (2013)

D. T. Son and B. Z. Spivak

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): D. T. Son and B. Z. Spivak We consider the classical magnetoresistance of a Weyl metal in which the electron Fermi surface possesses nonzero fluxes of the Berry curvature. Such a system may exhibit large negative magnetoresistance with unusual anisotropy as a function of the angle between the electric and magnetic fields. In ... [Phys. Rev. B 88, 104412] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

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13

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Postadiabatic Hamiltonian for low-energy excitations in a slowly-time-dependent BCS-BEC crossover (2013)

Bernhard M. Breid and James R. Anglin

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Bernhard M. Breid and James R. Anglin We develop a Hamiltonian that describes the time-dependent formation of a molecular Bose-Einstein condensate from a Bardeen-Cooper-Schrieffer state of fermionic atoms as a result of slowly sweeping through a Feshbach resonance. In contrast to many other calculations in the field, our Hamiltonian inc... [Phys. Rev. A 88, 033617] Published Mon Sep 16, 2013

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

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14

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Near the sill of the conformal window: Gauge theories with fermions in two-index representations (2013)

Thomas De; Grand, Yigal Shamir, and Benjamin Svetitsky

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Thomas DeGrand, Yigal Shamir, and Benjamin Svetitsky We apply Schrödinger functional methods to two gauge theories with fermions in two-index representations: the SU(3) theory with N f =2 adjoint fermions, and the SU(4) theory with N f =6 fermions in the two-index antisymmetric representation. Each theory is believed to lie near the bottom of the conforma... [Phys. Rev. D 88, 054505] Published Mon Sep 16, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Monte Carlo simulations on the Lefschetz thimble: Taming the sign problem (2013)

Marco Cristoforetti, Francesco Di Renzo, Abhishek Mukherjee, and Luigi Scorzato

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Marco Cristoforetti, Francesco Di Renzo, Abhishek Mukherjee, and Luigi Scorzato We present the first practical Monte Carlo calculations of the recently proposed Lefschetz thimble formulation of quantum field theories. Our results provide strong evidence that the numerical sign problem that afflicts Monte Carlo calculations of models with complex actions can be softened signific... [Phys. Rev. D 88, 051501] Published Mon Sep 16, 2013

Schlagwort(e): Strong interactions & Lattice methods

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16

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Absorption of planar massless scalar waves by Kerr black holes (2013)

Caio F. B. Macedo, Luiz C. S. Leite, Ednilton S. Oliveira, Sam R. Dolan, and Luís C. B. Crispino

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Caio F. B. Macedo, Luiz C. S. Leite, Ednilton S. Oliveira, Sam R. Dolan, and Luís C. B. Crispino We consider planar massless scalar waves impinging upon a Kerr black hole, for general angles of incidence. We compute the absorption cross section via the partial wave approach, and present a gallery of results. In the low-frequency regime, we show that the cross section approaches the horizon area... [Phys. Rev. D 88, 064033] Published Tue Sep 17, 2013

Schlagwort(e): General relativity, gravitation

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17

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Universality and thermalization in the Unruh effect (2013)

Wilson G. Brenna, Eric G. Brown, Robert B. Mann, and Eduardo Martín-Martínez

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Wilson G. Brenna, Eric G. Brown, Robert B. Mann, and Eduardo Martín-Martínez We explore the effects of different boundary conditions and coupling schemes on the response of a particle detector undergoing uniform acceleration in optical cavities. We analyze the thermalization properties of the accelerated detector via nonperturbative calculations. We prove nonperturbatively t... [Phys. Rev. D 88, 064031] Published Tue Sep 17, 2013

Schlagwort(e): General relativity, gravitation

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18

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Energy-resolved magnetic domain imaging in TbCo alloys by valence band photoemission magnetic circular dichroism (2013)

Pascal Melchior, Markus Rollinger, Philip Thielen, Sabine Alebrand, Ute Bierbrauer, Christian Schneider, Matthias Gottwald, Michel Hehn, Stéphane Mangin, Mirko Cinchetti, and Martin Aeschlimann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): Pascal Melchior, Markus Rollinger, Philip Thielen, Sabine Alebrand, Ute Bierbrauer, Christian Schneider, Matthias Gottwald, Michel Hehn, Stéphane Mangin, Mirko Cinchetti, and Martin Aeschlimann We report magnetic domain imaging of a terbium cobalt (TbCo) alloy thin film with a high perpendicular magnetic anisotropy in one- and two-photon photoemission electron microscopy (PEEM). Both photoemission processes deliver a clear magnetic circular dichroism (MCD) whose strength is strongly energy... [Phys. Rev. B 88, 104415] Published Wed Sep 18, 2013

Schlagwort(e): Magnetism

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Thema: Physik

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19

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Dzyaloshinskii-Moriya driven helical-butterfly structure in Ba_{3}NbFe_{3}Si_{2}O_{14} (2013)

V. Scagnoli, S. W. Huang, M. Garganourakis, R. A. de Souza, U. Staub, V. Simonet, P. Lejay, and R. Ballou

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): V. Scagnoli, S. W. Huang, M. Garganourakis, R. A. de Souza, U. Staub, V. Simonet, P. Lejay, and R. Ballou We have used soft x-ray magnetic diffraction at the Fe 3+ L 2,3 edges to examine to what extent the Dzyaloshinsky-Moriya interaction in Ba 3 NbFe 3 Si 2 O 14 influences its low-temperature magnetic structure. A modulated component of the moments along the c axis is present, adding to the previously proposed ... [Phys. Rev. B 88, 104417] Published Wed Sep 18, 2013

Schlagwort(e): Magnetism

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Correlation lengths of the repulsive one-dimensional Bose gas (2013)

Ovidiu I. Pâţu and Andreas Klümper

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): Ovidiu I. Pâţu and Andreas Klümper We investigate the large-distance asymptotic behavior of the static density-density and field-field correlation functions in the one-dimensional Bose gas at finite temperature. The asymptotic expansions of the Bose gas correlators are obtained performing a specific continuum limit in the similar low... [Phys. Rev. A 88, 033623] Published Thu Sep 19, 2013

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

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Thema: Physik

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Coherent magnon and acoustic phonon dynamics in tetragonal and rare-earth-doped BiFeO_{3} multiferroic thin films (2013)

K. I. Doig, F. Aguesse, A. K. Axelsson, N. M. Alford, S. Nawaz, V. R. Palkar, S. P. P. Jones, R. D. Johnson, R. A. Synowicki, and J. Lloyd-Hughes

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): K. I. Doig, F. Aguesse, A. K. Axelsson, N. M. Alford, S. Nawaz, V. R. Palkar, S. P. P. Jones, R. D. Johnson, R. A. Synowicki, and J. Lloyd-Hughes Coherent magnons and acoustic phonons were impulsively excited and probed in thin films of the room temperature multiferroic Bi 1− x − y Dy x La y FeO 3 using femtosecond laser pulses. The elastic moduli of rhombohedral, tetragonal, and rare-earth doped BiFeO 3 were determined from acoustic-mode frequencies in... [Phys. Rev. B 88, 094425] Published Thu Sep 19, 2013

Schlagwort(e): Magnetism

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Thema: Physik

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Geodesics in the linearized multipole solution: Distinguishing black holes from naked singularities (2013)

J. L. Hernandez-Pastora, L. Herrera, and J. Ospino

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): J. L. Hernandez-Pastora, L. Herrera, and J. Ospino We analyze the behavior of the geodesic motion of test particles in the spacetime of a specific class of axially symmetric static vacuum solutions to the Einstein equations, hereafter referred to as the linearized multipole solution. We discuss its suitability to describe a quasispherical spacetime.... [Phys. Rev. D 88, 064041] Published Thu Sep 19, 2013

Schlagwort(e): General relativity, gravitation

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Thema: Physik

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New synthesis of matter and gravity: A nongravitating scalar field (2013)

Inyong Cho and Hyeong-Chan Kim

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): Inyong Cho and Hyeong-Chan Kim We present a new manifestation of the nonlinearity of gravity-matter interactions. We show explicitly that there exists a nongravitating dynamical scalar field solution in Eddington-inspired Born-Infeld gravity. This kind of solution has not been found in previous literature based on general relativ... [Phys. Rev. D 88, 064038] Published Thu Sep 19, 2013

Schlagwort(e): General relativity, gravitation

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Thermodynamics, entropy, and stability of thin shells in 2+1 flat spacetimes (2013)

José P. S. Lemos and Gonçalo M. Quinta

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-20

Beschreibung: Author(s): José P. S. Lemos and Gonçalo M. Quinta The thermodynamic equilibrium states of a static thin ring shell in a (2+1)-dimensional flat spacetime is analyzed. Inside the ring the spacetime is flat, whereas outside it is conical flat. The first law of thermodynamics applied to the thin shell leads to a shell’s entropy, which is a function of ... [Phys. Rev. D 88, 067501] Published Thu Sep 19, 2013

Schlagwort(e): General relativity, gravitation

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Orientation dependence of the critical magnetic field for multiferroic BiFeO_{3} (2013)

Randy S. Fishman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): Randy S. Fishman Multiferroic BiFeO 3 undergoes a transition from a distorted spiral phase to a G-type antiferromagnet above a critical field H c that depends on the field orientation m . We show that H c ( m ) has a maximum when oriented along a cubic diagonal parallel to the electric polarization P and a minimum in the e... [Phys. Rev. B 88, 104419] Published Fri Sep 20, 2013

Schlagwort(e): Magnetism

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Modular invariance in the gapped XYZ spin-1/2 chain (2013)

Elisa Ercolessi, Stefano Evangelisti, Fabio Franchini, and Francesco Ravanini

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): Elisa Ercolessi, Stefano Evangelisti, Fabio Franchini, and Francesco Ravanini We show that the elliptic parametrization of the coupling constants of the quantum X Y Z spin chain can be analytically extended outside of their natural domain, to cover the whole phase diagram of the model, which is composed of 12 adjacent regions, related to one another by a spin rotation. This ext... [Phys. Rev. B 88, 104418] Published Fri Sep 20, 2013

Schlagwort(e): Magnetism

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Nucleon mass and pion-nucleon sigma term from a chiral analysis of lattice QCD data (2013)

L. Alvarez-Ruso, T. Ledwig, J. Martin Camalich, and M. J. Vicente-Vacas

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-21

Beschreibung: Author(s): L. Alvarez-Ruso, T. Ledwig, J. Martin Camalich, and M. J. Vicente-Vacas The pion mass dependence of the nucleon mass within the covariant S U (2) baryon chiral perturbation theory both without and with explicit Δ (1232) degrees of freedom up to order p 4 is investigated. By fitting to a comprehensive set of lattice QCD data in 2 and 2+1 flavors from several collaborations, ... [Phys. Rev. D 88, 054507] Published Fri Sep 20, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Tight-binding model for exciton-polariton condensates in external potentials (2013)

Piotr Stępnicki and Michał Matuszewski

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Piotr Stępnicki and Michał Matuszewski We propose a mean-field model to describe exciton-polariton condensates in deep periodic external potentials. We derive a set of coupled discrete equations for both condensed and uncondensed components, with interaction and tunneling coefficients obtained within the tight-binding approximation. We u... [Phys. Rev. A 88, 033626] Published Mon Sep 23, 2013

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

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Zero sound in a two-dimensional dipolar Fermi gas (2013)

Zhen-Kai Lu, S. I. Matveenko, and G. V. Shlyapnikov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Zhen-Kai Lu, S. I. Matveenko, and G. V. Shlyapnikov We study zero sound in a weakly interacting two-dimensional (2D) gas of single-component fermionic dipoles (polar molecules or atoms with a large magnetic moment) tilted with respect to the plane of their translational motion. It is shown that the propagation of zero sound is provided by both mean-f... [Phys. Rev. A 88, 033625] Published Mon Sep 23, 2013

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

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Theory of asymmetric and negative differential magnon tunneling under temperature bias: Towards a spin Seebeck diode and transistor (2013)

Jie Ren and Jian-Xin Zhu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Jie Ren and Jian-Xin Zhu We study the nonequilibrium transport for the asymmetric and negative differential magnon tunneling driven by temperature bias. We demonstrate that the many-body magnon interaction that makes the magnonic spectrum temperature-dependent is the crucial factor for the emergence of rectification and neg... [Phys. Rev. B 88, 094427] Published Mon Sep 23, 2013

Schlagwort(e): Magnetism

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Dissociation of quarkonium in an anisotropic hot QCD medium (2013)

Lata Thakur, Najmul Haque, Uttam Kakade, and Binoy Krishna Patra

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Lata Thakur, Najmul Haque, Uttam Kakade, and Binoy Krishna Patra We have studied the properties of quarkonium states in the presence of momentum anisotropy by correcting the full Cornell potential through the hard-loop resumed gluon propagator. The in-medium modification to the potential causes less screening, so quarkonium states become more tightly bound than i... [Phys. Rev. D 88, 054022] Published Mon Sep 23, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Dynamical black holes: Approach to the final state (2013)

Abhay Ashtekar, Miguel Campiglia, and Samir Shah

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Abhay Ashtekar, Miguel Campiglia, and Samir Shah Since black holes can be formed through widely varying processes, the horizon structure is highly complicated in the dynamical phase. Nonetheless, as numerical simulations show, the final state appears to be universal, well described by the Kerr geometry. How are all these large and widely varying d... [Phys. Rev. D 88, 064045] Published Mon Sep 23, 2013

Schlagwort(e): General relativity, gravitation

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Visualizing spacetime curvature via gradient flows. III. The Kerr metric and the transitional values of the spin parameter (2013)

Majd Abdelqader and Kayll Lake

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-24

Beschreibung: Author(s): Majd Abdelqader and Kayll Lake The Kerr metric is one of the most important solutions to Einstein’s field equations describing the gravitational field outside a rotating black hole. We thoroughly analyze the curvature scalar invariants to study the Kerr spacetime by examining and visualizing their covariant gradient fields. We di... [Phys. Rev. D 88, 064042] Published Mon Sep 23, 2013

Schlagwort(e): General relativity, gravitation

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Structural control of magnetic anisotropy in a strain-driven multiferroic EuTiO_{3} thin film (2013)

X. Ke, T. Birol, R. Misra, J.-H. Lee, B. J. Kirby, D. G. Schlom, C. J. Fennie, and J. W. Freeland

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): X. Ke, T. Birol, R. Misra, J.-H. Lee, B. J. Kirby, D. G. Schlom, C. J. Fennie, and J. W. Freeland Octahedral distortion plays a key role in engineering the physical properties of heterostructures composed of perovskite oxides. We observe a strong in-plane uniaxial magnetic anisotropy in a strain-enabled multiferroic EuTiO 3 thin film epitaxially grown on a (110) o DyScO 3 substrate. First-principle... [Phys. Rev. B 88, 094434] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Phase diagram of the spin-1 Heisenberg model with three-site interactions on the square lattice (2013)

F. Michaud and F. Mila

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): F. Michaud and F. Mila We study the spin S =1 antiferromagnetic Heisenberg model on the square lattice with, in addition to the nearest-neighbor interaction, a three-site interaction of the form ( S i · S j )( S j · S k )+H.c. This interaction appears naturally in a strong coupling expansion of the two-orbital, half-filled Hubbard mod... [Phys. Rev. B 88, 094435] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Demixing in symmetric supersolid mixtures (2013)

Piyush Jain, Saverio Moroni, Massimo Boninsegni, and Lode Pollet

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Piyush Jain, Saverio Moroni, Massimo Boninsegni, and Lode Pollet The droplet crystal phase of a symmetric binary mixture of soft-core bosons is studied by computer simulation. At high temperature each droplet comprises on average equal numbers of particles of either component, but the two components demix below the supersolid transition temperature, i.e., droplet... [Phys. Rev. A 88, 033628] Published Thu Sep 26, 2013

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

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Nuclear magnetic resonance studies of pseudospin fluctuations in URu_{2}Si_{2} (2013)

K. R. Shirer, J. T. Haraldsen, A. P. Dioguardi, J. Crocker, N. ap; Roberts-Warren, A. C. Shockley, C.-H. Lin, D. M. Nisson, J. C. Cooley, M. Janoschek, K. Huang, N. Kanchanavatee, M. B. Maple, M. J. Graf, A. V. Balatsky, and N. J. Curro

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): K. R. Shirer, J. T. Haraldsen, A. P. Dioguardi, J. Crocker, N. apRoberts-Warren, A. C. Shockley, C.-H. Lin, D. M. Nisson, J. C. Cooley, M. Janoschek, K. Huang, N. Kanchanavatee, M. B. Maple, M. J. Graf, A. V. Balatsky, and N. J. Curro We report 29 Si nuclear magnetic resonance measurements in single crystals and aligned powders of URu 2 Si 2 in the hidden order and paramagnetic phases. The spin-lattice relaxation data reveal evidence of pseudospin fluctuations of U moments in the paramagnetic phase. We find evidence for partial suppr... [Phys. Rev. B 88, 094436] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Classification of spin-nematic squeezing in spin-1 collective atomic systems (2013)

Emi Yukawa, Masahito Ueda, and Kae Nemoto

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Emi Yukawa, Masahito Ueda, and Kae Nemoto In spin-1 collective atomic systems, the spin and nematic-tensor operators constitute the su(3) Lie algebra, whose su(2) subalgebras are shown to give two distinct classes of squeezing which are unitarily equivalent to spin squeezing and spin-nematic squeezing. We explicitly construct a unitary oper... [Phys. Rev. A 88, 033629] Published Thu Sep 26, 2013

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

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Chiral properties of hematite α-Fe_{2}O_{3} inferred from resonant Bragg diffraction using circularly polarized x rays (2013)

A. Rodríguez-Fernández, J. A. Blanco, S. W. Lovesey, V. Scagnoli, U. Staub, H. C. Walker, D. K. Shukla, and J. Strempfer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): A. Rodríguez-Fernández, J. A. Blanco, S. W. Lovesey, V. Scagnoli, U. Staub, H. C. Walker, D. K. Shukla, and J. Strempfer Chiral properties of the two phases—collinear motif (below Morin transition temperature, T M ≈250 K) and canted motif (above T M )—of magnetically ordered hematite ( α -Fe 2 O 3 ) have been identified in single-crystal resonant x-ray Bragg diffraction using circular polarized incident x rays tuned near the ir... [Phys. Rev. B 88, 094437] Published Thu Sep 26, 2013

Schlagwort(e): Magnetism

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Metropolis Monte Carlo integration on the Lefschetz thimble: Application to a one-plaquette model (2013)

Abhishek Mukherjee, Marco Cristoforetti, and Luigi Scorzato

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Abhishek Mukherjee, Marco Cristoforetti, and Luigi Scorzato We propose a new algorithm based on the Metropolis sampling method to perform Monte Carlo integration for path integrals in the recently proposed formulation of quantum field theories on the Lefschetz thimble. The algorithm is based on a mapping between the curved manifold defined by the Lefschetz t... [Phys. Rev. D 88, 051502] Published Thu Sep 26, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Hadroproduction of Υ(nS) above the BB[over ¯] thresholds and implications for Y_{b}(10890) (2013)

Ahmed Ali, Christian Hambrock, and Wei Wang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Ahmed Ali, Christian Hambrock, and Wei Wang Based on the nonrelativistic QCD factorization scheme, we study the hadroproduction of the bottomonium states Υ (5 S ) and Υ (6 S ). We argue to search for them in the final states Υ (1 S ,2 S ,3 S ) π + π - , which are found to have anomalously large production rates at Υ (5 S ). The enhanced rates for the dipionic tra... [Phys. Rev. D 88, 054026] Published Thu Sep 26, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Generalized universality of definite rank gluon transverse momentum dependent correlators (2013)

M. G. A. Buffing, A. Mukherjee, and P. J. Mulders

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): M. G. A. Buffing, A. Mukherjee, and P. J. Mulders Transverse momentum dependent (TMD) parton correlators describing the partonic structure of hadrons contain gauge links, required by color gauge invariance. The required gauge links enter in the matrix elements that contain the parton fields and depend on the color flow in the hard process. The corr... [Phys. Rev. D 88, 054027] Published Thu Sep 26, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Rare decay B→Kℓ^{+}ℓ^{-} form factors from lattice QCD (2013)

Chris Bouchard, G. Peter Lepage, Christopher Monahan, Heechang Na, and Junko Shigemitsu (HPQCD Collaboration)

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Chris Bouchard, G. Peter Lepage, Christopher Monahan, Heechang Na, and Junko Shigemitsu (HPQCD Collaboration) We calculate, for the first time using unquenched lattice QCD, form factors for the rare decay B → K ℓ + ℓ - in and beyond the Standard Model. Our lattice QCD calculation utilizes a nonrelativistic QCD formulation for the b valence quarks and the highly improved staggered quark formulation for the light v... [Phys. Rev. D 88, 054509] Published Thu Sep 26, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Spin-torque switching efficiency in CoFeB-MgO based tunnel junctions (2013)

J. Z. Sun, S. L. Brown, W. Chen, E. A. Delenia, M. C. Gaidis, J. Harms, G. Hu, Xin Jiang, R. Kilaru, W. Kula, G. Lauer, L. Q. Liu, S. Murthy, J. Nowak, E. J. O’Sullivan, S. S. P. Parkin, R. P. Robertazzi, P. M. Rice, G. Sandhu, T. Topuria, and D. C. Worledge

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): J. Z. Sun, S. L. Brown, W. Chen, E. A. Delenia, M. C. Gaidis, J. Harms, G. Hu, Xin Jiang, R. Kilaru, W. Kula, G. Lauer, L. Q. Liu, S. Murthy, J. Nowak, E. J. O’Sullivan, S. S. P. Parkin, R. P. Robertazzi, P. M. Rice, G. Sandhu, T. Topuria, and D. C. Worledge It is convenient to define the spin-torque switching efficiency in nanostructured magnetic tunnel junctions as the ratio between the free-layers thermal activation barrier height E b and the threshold switching current I c 0 . Recent device exploration has led to occasional observations of spin-torque i... [Phys. Rev. B 88, 104426] Published Thu Sep 26, 2013

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Threshold resummed and approximate next-to-next-to-leading order results for W^{+}W^{-} pair production at the LHC (2013)

S. Dawson, Ian M. Lewis, and Mao Zeng

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): S. Dawson, Ian M. Lewis, and Mao Zeng The next-to-leading order (NLO) QCD radiative corrections to W + W - production at hadron colliders are well understood. We combine NLO perturbative QCD calculations with soft-gluon resummation of threshold logarithms to find a next-to-next-to-leading logarithmic (NNLL) prediction for the total cross s... [Phys. Rev. D 88, 054028] Published Thu Sep 26, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Searching for AdS_{3} waves and asymptotically Lifshitz black holes in R^{3} new massive gravity (2013)

Giorgos G. Anastasiou, M. R. Setare, and Elias C. Vagenas

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Giorgos G. Anastasiou, M. R. Setare, and Elias C. Vagenas In this paper, we consider the structure of the AdS 3 vacua in R 3 expansion of new massive gravity ( R 3 -NMG). We obtain the degeneracies of the AdS 3 vacua at several points of the parametric space. Additionally, following a specific analysis we show that AdS 3 wave solutions are present. Using these wa... [Phys. Rev. D 88, 064054] Published Thu Sep 26, 2013

Schlagwort(e): General relativity, gravitation

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Higgs and W boson spectrum from lattice simulations (2013)

Mark Wurtz and Randy Lewis

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Mark Wurtz and Randy Lewis The spectrum of energy levels is computed for all available angular momentum and parity quantum numbers in the SU(2)-Higgs model, with parameters chosen to match experimental data from the Higgs- W boson sector of the standard model. Several multiboson states are observed, with and without linear mom... [Phys. Rev. D 88, 054510] Published Thu Sep 26, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Analytic treatment of the charged black-hole-mirror bomb in the highly explosive regime (2013)

Shahar Hod

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-27

Beschreibung: Author(s): Shahar Hod A charged scalar field impinging upon a charged Reissner–Nordström black hole can be amplified as it scatters off the hole, a phenomenon known as super-radiant scattering. This scattering process in the super-radiant regime ω 〈 q Q / r + (here ω , q , Q , and r ± are the conserved frequency of the wave, th... [Phys. Rev. D 88, 064055] Published Thu Sep 26, 2013

Schlagwort(e): General relativity, gravitation

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Transverse spin diffusion in strongly interacting Fermi gases (2013)

Tilman Enss

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Tilman Enss We compute spin diffusion in a dilute Fermi gas at arbitrary temperature, polarization, and strong interaction in the normal phase using kinetic theory. While the longitudinal spin diffusivity D ∥ depends weakly on polarization and diverges for small temperatures, the transverse spin diffusivity D ⊥ h... [Phys. Rev. A 88, 033630] Published Fri Sep 27, 2013

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

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Magnetoelectric coupling in the Haldane spin-chain system Dy_{2}BaNiO_{5} (2013)

Kiran Singh, Tathamay Basu, S. Chowki, N. Mahapotra, Kartik K. Iyer, P. L. Paulose, and E. V. Sampathkumaran

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Kiran Singh, Tathamay Basu, S. Chowki, N. Mahapotra, Kartik K. Iyer, P. L. Paulose, and E. V. Sampathkumaran We report the results of various measurements, namely magnetization, complex dielectric permittivity, and electric polarization ( P ), on Dy 2 BaNiO 5 as a function of temperature ( T ) and magnetic field ( H ), apart from heat capacity ( C ), with the primary motivation of exploring the existence of magnetoel... [Phys. Rev. B 88, 094438] Published Fri Sep 27, 2013

Schlagwort(e): Magnetism

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Color octet potential to three loops (2013)

Chihaya Anzai, Mario Prausa, Alexander V. Smirnov, Vladimir A. Smirnov, and Matthias Steinhauser

American Physical Society (APS)

In: Physical Review D

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Beschreibung: Author(s): Chihaya Anzai, Mario Prausa, Alexander V. Smirnov, Vladimir A. Smirnov, and Matthias Steinhauser We consider the interaction between two static sources in the color octet configuration and compute the potential to three loops. Special emphasis is put on the treatment of pinch contributions, and two methods are applied to reduce their evaluation to diagrams without pinches. [Phys. Rev. D 88, 054030] Published Fri Sep 27, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Doubly charmed tetraquarks in B_{c} and Ξ_{bc} decays (2013)

A. Esposito, M. Papinutto, A. Pilloni, A. D. Polosa, and N. Tantalo

American Physical Society (APS)

In: Physical Review D

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Beschreibung: Author(s): A. Esposito, M. Papinutto, A. Pilloni, A. D. Polosa, and N. Tantalo The phenomenology of the so-called X , Y and Z hadronic resonances is hard to reconcile with standard charmonium or bottomonium interpretations. It has been suggested that some of these new hadrons can possibly be described as tightly bound tetraquark states and/or as loosely bound two-meson molecule... [Phys. Rev. D 88, 054029] Published Fri Sep 27, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Dynamical evolution of the electromagnetic perturbation with Weyl corrections (2013)

Songbai Chen and Jiliang Jing

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Songbai Chen and Jiliang Jing We present firstly the master equation of an electromagnetic perturbation with Weyl correction in the four-dimensional black hole spacetime, which depends not only on the Weyl correction parameter, but also on the parity of the electromagnetic field. It is quite different from that of the usual elec... [Phys. Rev. D 88, 064058] Published Fri Sep 27, 2013

Schlagwort(e): General relativity, gravitation

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Null geodesics, local CFT operators, and AdS/CFT for subregions (2013)

Raphael Bousso, Ben Freivogel, Stefan Leichenauer, Vladimir Rosenhaus, and Claire Zukowski

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Raphael Bousso, Ben Freivogel, Stefan Leichenauer, Vladimir Rosenhaus, and Claire Zukowski We investigate the nature of the AdS/CFT duality between a subregion of the bulk and its boundary. In global AdS/CFT in the classical G N =0 limit, the duality reduces to a boundary value problem that can be solved by restricting to one-point functions of local operators in the conformal field theory ... [Phys. Rev. D 88, 064057] Published Fri Sep 27, 2013

Schlagwort(e): General relativity, gravitation

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Rosetta stone for parametrized tests of gravity (2013)

Laura Sampson, Nicolás Yunes, and Neil Cornish

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): Laura Sampson, Nicolás Yunes, and Neil Cornish Several model-independent parametrizations of deviations from general relativity have been developed to test Einstein’s theory. Although these different parametrizations were developed for different gravitational observables, they ultimately all test the same underlying physics. In this paper, we de... [Phys. Rev. D 88, 064056] Published Fri Sep 27, 2013

Schlagwort(e): General relativity, gravitation

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Self-consistent tight-binding description of Dirac points moving and merging in two-dimensional optical lattices (2013)

Julen Ibañez-Azpiroz, Asier Eiguren, Aitor Bergara, Giulio Pettini, and Michele Modugno

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Julen Ibañez-Azpiroz, Asier Eiguren, Aitor Bergara, Giulio Pettini, and Michele Modugno We present an accurate ab initio tight-binding model, capable of describing the dynamics of Dirac points in tunable honeycomb optical lattices following a recent experimental realization [ Tarruell et al. Nature (London) 483 302 (2012) ]. Our scheme is based on first-principle maximally localized Wa... [Phys. Rev. A 88, 033631] Published Mon Sep 30, 2013

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

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Itinerant electronic ferromagnetism in Sr_{2}ScO_{3}CoAs with largely spaced CoAs conduction layers (2013)

Hiroto Ohta, Daisuke Noguchi, Koichiro Nabetani, and Hiroko Aruga Katori

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Hiroto Ohta, Daisuke Noguchi, Koichiro Nabetani, and Hiroko Aruga Katori We studied magnetism of Sr 2 ScO 3 CoAs, a member of the group of layered compound with CoAs conducting layers, by using successfully synthesized polycrystalline sample. As a result of magnetic and electric resistivity measurements, Sr 2 ScO 3 CoAs was revealed to be an itinerant electronic ferromagnet with... [Phys. Rev. B 88, 094441] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

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Magnetocrystalline anisotropy and the magnetocaloric effect in Fe_{2}P (2013)

L. Caron, M. Hudl, V. Höglin, N. H. Dung, C. P. Gomez, M. Sahlberg, E. Brück, Y. Andersson, and P. Nordblad

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): L. Caron, M. Hudl, V. Höglin, N. H. Dung, C. P. Gomez, M. Sahlberg, E. Brück, Y. Andersson, and P. Nordblad Magnetic and magnetocaloric properties of high-purity, giant magnetocaloric polycrystalline and single-crystalline Fe 2 P are investigated. Fe 2 P displays a moderate magnetic entropy change, which spans over 70 K and the presence of strong magnetization anisotropy proves this system is not fully itiner... [Phys. Rev. B 88, 094440] Published Mon Sep 30, 2013

Schlagwort(e): Magnetism

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Jet mass spectra in Higgs boson plus one jet at next-to-next-to-leading logarithmic order (2013)

Teppo T. Jouttenus, Iain W. Stewart, Frank J. Tackmann, and Wouter J. Waalewijn

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): Teppo T. Jouttenus, Iain W. Stewart, Frank J. Tackmann, and Wouter J. Waalewijn The invariant mass of a jet is a benchmark variable describing the structure of jets at the LHC. We calculate the jet mass spectrum for Higgs plus one jet at the LHC at next-to-next-to-leading logarithmic (NNLL) order using a factorization formula. At this order, the cross section becomes sensitive ... [Phys. Rev. D 88, 054031] Published Mon Sep 30, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Effective multiquark interactions with explicit breaking of chiral symmetry (2013)

A. A. Osipov, B. Hiller, and A. H. Blin

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-01

Beschreibung: Author(s): A. A. Osipov, B. Hiller, and A. H. Blin In a long distance Lagrangian approach to the low lying meson phenomenology, we present and discuss the most general spin zero multiquark interaction vertices of nonderivative type which include a set of effective interactions proportional to the current quark masses, breaking explicitly the chiral ... [Phys. Rev. D 88, 054032] Published Mon Sep 30, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Magnetic ground state of the M_{n+1}AX_{n}-phase nitride Cr_{2}GaN (2013)

Z. Liu, T. Waki, Y. Tabata, K. Yuge, H. Nakamura, and I. Watanabe

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-02

Beschreibung: Author(s): Z. Liu, T. Waki, Y. Tabata, K. Yuge, H. Nakamura, and I. Watanabe Aiming to find magnetic states in the M n +1 A X n phases, we measured the magnetic susceptibility, the resistivity, and nuclear magnetic resonance of Cr 2 Ga X ( X =N and C). Zero-field and longitudinal-field muon spin relaxation experiments were also applied to Cr 2 GaN. A magnetic phase transition, most prob... [Phys. Rev. B 88, 134401] Published Tue Oct 01, 2013

Schlagwort(e): Magnetism

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Extended study of prompt photon photoproduction at HERA with k_{T}-factorization (2013)

A. V. Lipatov, M. A. Malyshev, and N. P. Zotov

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-02

Beschreibung: Author(s): A. V. Lipatov, M. A. Malyshev, and N. P. Zotov We reconsider prompt photon photoproduction at HERA in the framework of the k T -factorization QCD approach. The proposed method is based on the O ( α 2 α s ) amplitudes for γ q → γ g q and γ g * → γ q q ̅ partonic subprocesses. Additionally, we take into account the O ( α 2 α s 2 ) box contributions γ g → γ g to the prod... [Phys. Rev. D 88, 074001] Published Tue Oct 01, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Collision of shock waves in Einstein-Maxwell theory with a cosmological constant: A special solution (2013)

C. Barrabès and P. A. Hogan

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-02

Beschreibung: Author(s): C. Barrabès and P. A. Hogan Postcollision space-times of the Cartesian product form M ′ × M ′′ , where M ′ and M ′′ are two-dimensional manifolds, are known with M ′ and M ′′ having constant curvatures of equal and opposite sign (for the collision of electromagnetic shock waves) or of the same sign (for the collision of gravitational s... [Phys. Rev. D 88, 087501] Published Tue Oct 01, 2013

Schlagwort(e): General relativity, gravitation

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Searching for anisotropic gravitational-wave backgrounds using pulsar timing arrays (2013)

Stephen R. Taylor and Jonathan R. Gair

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-02

Beschreibung: Author(s): Stephen R. Taylor and Jonathan R. Gair We present the results of simulated injections testing the first Bayesian search pipeline capable of investigating the angular structure of a gravitational-wave (GW) background influencing pulsar signals. A stochastic background of GWs from the incoherent superposition of many inspiraling supermassi... [Phys. Rev. D 88, 084001] Published Tue Oct 01, 2013

Schlagwort(e): General relativity, gravitation

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Robust perpendicular exchange coupling in an ultrathin CoO/PtFe double layer: Strain and spin orientation (2013)

Anne D. Lamirand, Márcio M. Soares, Aline Y. Ramos, Hélio C. N. Tolentino, Maurizio De Santis, Julio C. Cezar, Abner de Siervo, and Matthieu Jamet

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-03

Beschreibung: Author(s): Anne D. Lamirand, Márcio M. Soares, Aline Y. Ramos, Hélio C. N. Tolentino, Maurizio De Santis, Julio C. Cezar, Abner de Siervo, and Matthieu Jamet We report on the exchange coupling and magnetic properties of a strained ultrathin CoO/PtFe double layer with perpendicular magnetic anisotropy. The cobalt oxide growth by reactive molecular beam epitaxy on a Pt-terminated PtFe/Pt(001) surface gives rise to a hexagonal surface and a monoclinic disto... [Phys. Rev. B 88, 140401] Published Wed Oct 02, 2013

Schlagwort(e): Magnetism

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Potential for general relativity and its geometry (2013)

Gregory Gabadadze, Kurt Hinterbichler, David Pirtskhalava, and Yanwen Shang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-03

Beschreibung: Author(s): Gregory Gabadadze, Kurt Hinterbichler, David Pirtskhalava, and Yanwen Shang The unique ghost-free mass and nonlinear potential terms for general relativity are presented in a diffeomorphism and local Lorentz invariant vierbein formalism. This construction requires an additional two-index Stückelberg field, beyond the four scalar fields used in the metric formulation, and un... [Phys. Rev. D 88, 084003] Published Wed Oct 02, 2013

Schlagwort(e): General relativity, gravitation

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Restoring general relativity in massive bigravity theory (2013)

Eugeny Babichev and Marco Crisostomi

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-03

Beschreibung: Author(s): Eugeny Babichev and Marco Crisostomi We study static spherically symmetric solutions of massive bigravity theory, free from the Boulware-Deser ghost. We show the recovery of general relativity via the Vainshtein mechanism, in the weak limit of the physical metric. We find a single polynomial equation determining the behavior of the sol... [Phys. Rev. D 88, 084002] Published Wed Oct 02, 2013

Schlagwort(e): General relativity, gravitation

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Parity-violating quantum kinetic theory in (2+1) dimensions (2013)

Jiunn-Wei Chen, Jian-Hua Gao, Juan Liu, Shi Pu, and Qun Wang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-05

Beschreibung: Author(s): Jiunn-Wei Chen, Jian-Hua Gao, Juan Liu, Shi Pu, and Qun Wang We study the kinetic theory for a (2+1)-dimensional fermionic system with special emphasis on the parity violating properties associated with the fermion mass. The Wigner function approach is used to derive hydrodynamical transport coefficients to the first spatial derivative order. As a first attem... [Phys. Rev. D 88, 074003] Published Fri Oct 04, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Physical interpretation of the dressed Polyakov loop in the Nambu–Jona-Lasinio model (2013)

S. Benić

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-10-05

Beschreibung: Author(s): S. Benić We investigate the rapid rise of the dressed Polyakov loop in the Nambu–Jona-Lasinio (NJL) model as a function of temperature. In QCD such a behavior is interpreted as a confinement-deconfinement phase transition. However, we demonstrate that in the NJL model this is simply a remnant of the chiral t... [Phys. Rev. D 88, 077501] Published Fri Oct 04, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Inverse magnetic catalysis induced by sphalerons (2013)

Jingyi Chao, Pengcheng Chu, and Mei Huang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): Jingyi Chao, Pengcheng Chu, and Mei Huang The recently discovered inverse magnetic catalysis around the critical temperature indicates that some important information is missing in our current understanding of conventional chiral dynamics of QCD, which is enhanced by the magnetic field. In this work, we provide a mechanism to explain that t... [Phys. Rev. D 88, 054009] Published Fri Sep 06, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Phase coexistence and magnetically tuneable polarization in cycloidal multiferroics (2013)

I. Fina, V. Skumryev, D. O’Flynn, G. Balakrishnan, and J. Fontcuberta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-07

Beschreibung: Author(s): I. Fina, V. Skumryev, D. O’Flynn, G. Balakrishnan, and J. Fontcuberta In some magnetic ferroelectrics the polarization P direction can be selected by a magnetic field H . Here we show that in a (Y 1− x Sm x )MnO 3 single crystal, both the direction and the magnitude of P can be controlled solely by H . We argue that this remarkable dual control arises from both the phase coex... [Phys. Rev. B 88, 100403] Published Fri Sep 06, 2013

Schlagwort(e): Magnetism

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Collective modes in the anisotropic unitary Fermi gas and the inclusion of a backflow term (2013)

L. Salasnich, P. Comaron, M. Zambon, and F. Toigo

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): L. Salasnich, P. Comaron, M. Zambon, and F. Toigo We study the collective modes of the confined unitary Fermi gas under anisotropic harmonic confinement as a function of the number of atoms. We use the equations of extended superfluid hydrodynamics, which take into account a dispersive von Weizsäcker-like term [ C. F. von Weizsäcker Z. Phys. 96 43... [Phys. Rev. A 88, 033610] Published Mon Sep 09, 2013

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

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Heavy-antiquark–diquark symmetry and heavy hadron molecules: Are there triply heavy pentaquarks? (2013)

Feng-Kun Guo, Carlos Hidalgo-Duque, Juan Nieves, and Manuel Pavón Valderrama

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): Feng-Kun Guo, Carlos Hidalgo-Duque, Juan Nieves, and Manuel Pavón Valderrama We explore the consequences of heavy flavor, heavy quark spin, and heavy antiquark-diquark symmetries for hadronic molecules within an effective field theory framework. Owing to heavy antiquark-diquark symmetry, the doubly heavy baryons have approximately the same light-quark structure as the heavy ... [Phys. Rev. D 88, 054014] Published Mon Sep 09, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Intrinsic strangeness and charm of the nucleon using improved staggered fermions (2013)

W. Freeman and D. Toussaint (MILC Collaboration)

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): W. Freeman and D. Toussaint (MILC Collaboration) We calculate the intrinsic strangeness of the nucleon, ⟨ N | s ̅ s | N ⟩-⟨0| s ̅ s |0⟩, using the MILC library of improved staggered gauge configurations using the Asqtad and HISQ actions. Additionally, we present a preliminary calculation of the intrinsic charm of the nucleon using the HISQ act... [Phys. Rev. D 88, 054503] Published Mon Sep 09, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Microwave-induced excitations in the kagome system Pr_{3}Ga_{5}SiO_{14} (2013)

Sanhita Ghosh, Saiti Datta, Haidong Zhou, Michael Hoch, Christopher R. Wiebe, Pedro Schlottmann, and Stephen Hill

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-11

Beschreibung: Author(s): Sanhita Ghosh, Saiti Datta, Haidong Zhou, Michael Hoch, Christopher R. Wiebe, Pedro Schlottmann, and Stephen Hill Low-energy excitations in the rare earth kagome spin system Pr 3 Ga 5 SiO 14 (PGS) have been investigated using high-field electron spin resonance (ESR) techniques. Previous work has shown that PGS does not exhibit long-range magnetic order at temperatures down to 30 mK. The present low-temperature (1.3–... [Phys. Rev. B 88, 094414] Published Tue Sep 10, 2013

Schlagwort(e): Magnetism

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Landau levels in lattices with long-range hopping (2013)

Hakan Atakişi and M. Ö. Oktel

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Hakan Atakişi and M. Ö. Oktel Landau levels (LLs) are broadened in the presence of a periodic potential, forming a barrier for accurate simulation of the fractional quantum Hall effect using cold atoms in optical lattices. Recently, it has been shown that the degeneracy of the lowest Landau level (LLL) can be restored in a tight... [Phys. Rev. A 88, 033612] Published Tue Sep 10, 2013

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

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Nonviolent nonlocality (2013)

Steven B. Giddings

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-11

Beschreibung: Author(s): Steven B. Giddings If quantum mechanics governs nature, black holes must evolve unitarily, providing a powerful constraint on the dynamics of quantum gravity. Such evolution apparently must in particular be nonlocal, when described from the usual semiclassical geometric picture, in order to transfer quantum informatio... [Phys. Rev. D 88, 064023] Published Tue Sep 10, 2013

Schlagwort(e): General relativity, gravitation

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Unified Bertotti-Robinson and Melvin spacetimes (2013)

S. Habib Mazharimousavi and M. Halilsoy

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-11

Beschreibung: Author(s): S. Habib Mazharimousavi and M. Halilsoy We present a solution for the Einstein-Maxwell equations which unifies both the magnetic Bertotti-Robinson and Melvin solutions as a single metric in the axially symmetric coordinates { t , ρ , z , φ }. Depending on the strength of magnetic field the spacetime manifold, unlike the cases of separate Bertotti... [Phys. Rev. D 88, 064021] Published Tue Sep 10, 2013

Schlagwort(e): General relativity, gravitation

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Backscattering echo of correlated wave packets (2013)

Nicolas Cherroret and Dominique Delande

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): Nicolas Cherroret and Dominique Delande We present an analytical theory describing a phenomenon of enhanced backscattering corresponding to the spatial refocussing of a spreadout correlated wave packet due to a brief interaction with a disordered potential. Our theory is validated by numerical simulations and explains the physics observed... [Phys. Rev. A 88, 035602] Published Thu Sep 12, 2013

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

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Spin state and orbital ordering in CuCr_{2}O_{4} investigated by NMR (2013)

Euna Jo, Byeongki Kang, Changsoo Kim, Sangil Kwon, and Soonchil Lee

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Euna Jo, Byeongki Kang, Changsoo Kim, Sangil Kwon, and Soonchil Lee 63,65 Cu and 53 Cr nuclear magnetic resonance spectra for CuCr 2 O 4 were measured at various magnetic fields and temperatures. The microscopic evidence of orbital ordering in CuCr 2 O 4 was obtained from a dipolar hyperfine field, NQR, and magnetic anisotropy analysis of the linewidth broadening of the Cu ... [Phys. Rev. B 88, 094417] Published Thu Sep 12, 2013

Schlagwort(e): Magnetism

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Tailoring magnetic properties of metallic thin films with quantum well states and external electric fields (2013)

T. R. Dasa, P. Ruiz-Díaz, O. O. Brovko, and V. S. Stepanyuk

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): T. R. Dasa, P. Ruiz-Díaz, O. O. Brovko, and V. S. Stepanyuk Thickness dependence of magnetic anisotropy energy (MAE) and spin polarization in Fe and Co multilayers on a Pt(001) substrate are investigated with ab initio techniques. As the thickness of the thin films is increased, an oscillatory behavior of the MAE of the systems is observed. For Fe multilayer... [Phys. Rev. B 88, 104409] Published Thu Sep 12, 2013

Schlagwort(e): Magnetism

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Induced magnetism versus Kondo screening in alternating Mott-metal layers (2013)

Aleksander Zujev and Pinaki Sengupta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-13

Beschreibung: Author(s): Aleksander Zujev and Pinaki Sengupta We investigate the magnetic properties of a heterostructure comprised of alternating metallic and Mott insulating layers of fermions with varying interlayer hybridization. Results from large-scale quantum Monte Carlo simulations at half-filling show clear evidence of induced magnetism in the metalli... [Phys. Rev. B 88, 094415] Published Thu Sep 12, 2013

Schlagwort(e): Magnetism

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Binding carriers to a nonmagnetic impurity in a two-dimensional square Ising antiferromagnet (2013)

Hadi Ebrahimnejad and Mona Berciu

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Hadi Ebrahimnejad and Mona Berciu A hole in a two-dimensional Ising antiferromagnet was believed to be infinitely heavy due to the string of wrongly oriented spins it creates as it moves, which should trap it near its original location. Trugman showed that, in fact, the hole acquires a finite effective mass due to contributions from... [Phys. Rev. B 88, 104410] Published Thu Sep 12, 2013

Schlagwort(e): Magnetism

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Bottonium in QCD at finite temperature (2013)

C. A. Dominguez, M. Loewe, and Y. Zhang

American Physical Society (APS)

In: Physical Review D

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Beschreibung: Author(s): C. A. Dominguez, M. Loewe, and Y. Zhang Vector ( Υ ) and pseudoscalar ( η b ) bottonium ground states are studied at finite temperature in the framework of thermal Hilbert moment QCD sum rules. The mass, the onset of perturbative QCD in the complex squared energy plane, s 0 , the leptonic decay constant, and the total width are determined as a f... [Phys. Rev. D 88, 054015] Published Thu Sep 12, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Effective potential and Goldstone bosons in de Sitter space (2013)

Takashi Arai

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): Takashi Arai We investigate nonperturbative infrared effects for the O ( N ) linear sigma model in de Sitter space using the two-particle irreducible effective action at the Hartree truncation level. This approximation resums the infinite series of so-called superdaisy diagrams. For the proper treatment of ultravio... [Phys. Rev. D 88, 064029] Published Fri Sep 13, 2013

Schlagwort(e): General relativity, gravitation

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Inside the SU(3) quark-antiquark QCD flux tube: Screening versus quantum widening (2013)

N. Cardoso, M. Cardoso, and P. Bicudo

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): N. Cardoso, M. Cardoso, and P. Bicudo In lattice QCD, color confinement manifests in flux tubes. We compute in detail the quark-antiquark flux tube for pure gauge SU(3) dimension D =3+1 for quark-antiquark distances R ranging from 0.4 to 1.4 fm. To increase the signal-to-noise ratio, we apply the improved multihit and extended smearing t... [Phys. Rev. D 88, 054504] Published Fri Sep 13, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Unusual temperature-dependent exchange interaction in GdFe_{2}Al_{10} in comparison with GdRu_{2}Al_{10} (2013)

M. Sera, H. Nohara, M. Nakamura, H. Tanida, T. Nishioka, and M. Matsumura

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): M. Sera, H. Nohara, M. Nakamura, H. Tanida, T. Nishioka, and M. Matsumura We investigated the magnetic properties of the antiferromagnetic (AFM) compound Gd T 2 Al 10 ( T =Ru and Fe). Although GdRu 2 Al 10 could be understood well as a simple AFM compound, the exchange interaction in GdFe 2 Al 10 is found to be greatly varied with temperature. The magnitude of the AFM exchange intera... [Phys. Rev. B 88, 100404] Published Fri Sep 13, 2013

Schlagwort(e): Magnetism

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Wormholes in higher dimensional space-time: Exact solutions and their linear stability analysis (2013)

Takashi Torii and Hisa-aki Shinkai

American Physical Society (APS)

In: Physical Review D

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Beschreibung: Author(s): Takashi Torii and Hisa-aki Shinkai We derive the simplest traversable wormhole solutions in n -dimensional general relativity, assuming static and spherically symmetric space-time with a ghost scalar field. This is the generalization of the Ellis solution (or the so-called Morris-Thorne’s traversable wormhole) into a higher dimension.... [Phys. Rev. D 88, 064027] Published Fri Sep 13, 2013

Schlagwort(e): General relativity, gravitation

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Multiple phase transitions in CuO observed with thermal expansion (2013)

A. Rebello, Z. C. M. Winter, S. Viall, and J. J. Neumeier

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): A. Rebello, Z. C. M. Winter, S. Viall, and J. J. Neumeier High-resolution thermal-expansion measurements of single-crystalline CuO (tenorite) are reported for the temperature range 5〈 T 〈350 K. The data reveal three transitions ( T N 1 = 213 K, T N 2 = 229.2 K, and T N 3 = 229.8 K), which corroborate the recently proposed magnetic phase diagram [ Villarreal, ... [Phys. Rev. B 88, 094420] Published Mon Sep 16, 2013

Schlagwort(e): Magnetism

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Influence of the magnetic material on tunneling magnetoresistance and spin-transfer torque in tunnel junctions: Ab initio studies (2013)

Christian Franz, Michael Czerner, and Christian Heiliger

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Christian Franz, Michael Czerner, and Christian Heiliger The dependence of tunneling magnetoresistance and spin-transfer torque in FeCo/MgO/FeCo tunnel junctions on the Co concentration and the bias voltage are investigated ab initio . We find that the tunneling magnetoresistance decreases with the Co concentration, in contradiction to previous calculation... [Phys. Rev. B 88, 094421] Published Mon Sep 16, 2013

Schlagwort(e): Magnetism

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Spin-transfer torque and current-induced switching in metallic spin valves with perpendicular polarizers (2013)

Pavel Baláž, Maciej Zwierzycki, and Józef Barnaś

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Pavel Baláž, Maciej Zwierzycki, and Józef Barnaś We present a theoretical description of spin-transfer torque in a spin valve with perpendicularly magnetized polarizer. The polarizer consisting of several ultrathin layers is considered as a single interfacial magnetic scatterer between two nonmagnetic layers, and is included in the theory based on... [Phys. Rev. B 88, 094422] Published Mon Sep 16, 2013

Schlagwort(e): Magnetism

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S=2 quasi-one-dimensional spin waves in CrCl_{2} (2013)

M. B. Stone, G. Ehlers, and G. E. Granroth

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): M. B. Stone, G. Ehlers, and G. E. Granroth We examine the magnetic excitation spectrum in the S =2 Heisenberg antiferromagnet CrCl 2 . Inelastic neutron scattering measurements on powder samples are able to determine the significant exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the Néel temperatu... [Phys. Rev. B 88, 104413] Published Mon Sep 16, 2013

Schlagwort(e): Magnetism

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Roton-assisted chiral p-wave superfluid in a quasi-two-dimensional dipolar Bose-Fermi quantum-gas mixture (2013)

Ben Kain and Hong Y. Ling

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): Ben Kain and Hong Y. Ling The chiral p -wave ( p x ± i p y ) superfluid has attracted significant attention in recent years, mainly because its vortex core supports a Majorana fermion which, due to its non-Abelian statistics, can be explored for implementing topological quantum computation. Mixing dipolar bosons with fermions in qua... [Phys. Rev. A 88, 033616] Published Mon Sep 16, 2013

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

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Supersolid structure and excitation spectrum of soft-core bosons in three dimensions (2013)

Francesco Ancilotto, Maurizio Rossi, and Flavio Toigo

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-17

Beschreibung: Author(s): Francesco Ancilotto, Maurizio Rossi, and Flavio Toigo By means of a mean-field method, we have studied the zero-temperature structure and excitation spectrum of a three-dimensional soft-core bosonic system for a value of the interaction strength that favors a crystal structure made of atomic nanoclusters arranged with fcc ordering. In addition to the l... [Phys. Rev. A 88, 033618] Published Mon Sep 16, 2013

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

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Influence of Cr doping on the magnetic structure of the FeAs-strips compound CaFe_{4}As_{3}: A single-crystal neutron diffraction study (2013)

P. Manuel, L. C. Chapon, G. Trimarchi, I. S. Todorov, D. Y. Chung, B. Ouladdiaf, M. J. Gutmann, A. J. Freeman, and M. G. Kanatzidis

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): P. Manuel, L. C. Chapon, G. Trimarchi, I. S. Todorov, D. Y. Chung, B. Ouladdiaf, M. J. Gutmann, A. J. Freeman, and M. G. Kanatzidis We have studied the magnetic structure of a Cr-doped iron-arsenide compound CaFe 4 As 3 by means of single crystal neutron diffraction. The neutron data reveal that below 90 K, an antiferromagnetic structure with propagation vector k =0 is adopted. Refinement of the magnetic structure using one of the m... [Phys. Rev. B 88, 104414] Published Tue Sep 17, 2013

Schlagwort(e): Magnetism

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Magnetic flux loop in high-energy heavy-ion collisions (2013)

Adrian Dumitru, Yasushi Nara, and Elena Petreska

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Adrian Dumitru, Yasushi Nara, and Elena Petreska We consider the expectation value of a chromomagnetic flux loop in the immediate forward light cone of collisions of heavy nuclei at high energies. Such collisions are characterized by a nonlinear scale Q s where color fields become strong. We find that loops of area greater than ∼1.5/ Q s 2 exhibit are... [Phys. Rev. D 88, 054016] Published Tue Sep 17, 2013

Schlagwort(e): Strong interactions & Lattice methods

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

Publiziert von American Physical Society (APS)

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Momentum-dependent s-wave and d-wave interactions in atomic Bose-Einstein condensates (2013)

Moumita Gupta and Krishna Rai Dastidar

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Moumita Gupta and Krishna Rai Dastidar We investigate the role of momentum-dependent interactions to determine the ground-state properties in the Bose-Einstein condensate for large scattering lengths ( a ) such that k a ≥1, even for small momentum ( p ) where p = ℏ k and k is the wave number. The results for momentum-dependent and momentum-indep... [Phys. Rev. A 88, 033619] Published Tue Sep 17, 2013

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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Bañados-Silk-West effect with nongeodesic particles: Extremal horizons (2013)

I. V. Tanatarov and O. B. Zaslavskii

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): I. V. Tanatarov and O. B. Zaslavskii The Bañados-Silk-West effect consists in the possibility to obtain arbitrarily large energy E c.m. in the center of mass frame of two colliding particles near the black hole horizon. One of the common beliefs was that the action of force on these particles (say, due to gravitational radiation) should... [Phys. Rev. D 88, 064036] Published Tue Sep 17, 2013

Schlagwort(e): General relativity, gravitation

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Digitale ISSN: 1089-4918

Thema: Physik

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Pairing fluctuation effects in a strongly coupled color superfluid/superconductor (2013)

Jinyi Pang, Jincheng Wang, and Lianyi He

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Jinyi Pang, Jincheng Wang, and Lianyi He We investigate the effects of pairing fluctuations in fermionic superfluids/superconductors where pairing occurs among three species (colors) of fermions. Such color superfluids/superconductors can be realized in three-component atomic Fermi gases and in dense quark matter. The superfluidity/superco... [Phys. Rev. D 88, 054017] Published Tue Sep 17, 2013

Schlagwort(e): Strong interactions & Lattice methods

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Thema: Physik

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Twisted self-duality for linearized gravity in D dimensions (2013)

Claudio Bunster, Marc Henneaux, and Sergio Hörtner

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Claudio Bunster, Marc Henneaux, and Sergio Hörtner The linearized Einstein equations in D spacetime dimensions can be written as twisted self-duality equations expressing that the linearized curvature tensor of the graviton described by a rank-2 symmetric tensor is dual to the linearized curvature tensor of the “dual graviton” described by a tensor ... [Phys. Rev. D 88, 064032] Published Tue Sep 17, 2013

Schlagwort(e): General relativity, gravitation

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Thema: Physik

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