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Surface Wrinkling Patterns on a Core-Shell Soft Sphere (2011)

Bo Li, Fei Jia, Yan-Ping Cao, Xi-Qiao Feng, and Huajian Gao

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-08

Beschreibung: Author(s): Bo Li, Fei Jia, Yan-Ping Cao, Xi-Qiao Feng, and Huajian Gao The three-dimensional patterns of surface wrinkling on a core-shell soft sphere are investigated through buckling and postbuckling analyses under differential tissue growth or shrinkage. With increasing deformation, the sphere first exhibits a buckyball-like wrinkling pattern and then undergoes a wr... [Phys. Rev. Lett. 106, 234301] Published Tue Jun 07, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Thema: Physik

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Nearly Flatbands with Nontrivial Topology (2011)

Kai Sun, Zhengcheng Gu, Hosho Katsura, and S. Das Sarma

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-07

Beschreibung: Author(s): Kai Sun, Zhengcheng Gu, Hosho Katsura, and S. Das Sarma We report the theoretical discovery of a class of 2D tight-binding models containing nearly flatbands with nonzero Chern numbers. In contrast with previous studies, where nonlocal hoppings are usually required, the Hamiltonians of our models only require short-range hopping and have the potential to... [Phys. Rev. Lett. 106, 236803] Published Mon Jun 06, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Weakly Coupled Pfaffian as a Type I Quantum Hall Liquid (2011)

S. A. Parameswaran, S. A. Kivelson, S. L. Sondhi, and B. Z. Spivak

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-07

Beschreibung: Author(s): S. A. Parameswaran, S. A. Kivelson, S. L. Sondhi, and B. Z. Spivak The Pfaffian phase in the proximity of a half-filled Landau level is understood to be a p + i p superconductor of composite fermions. We consider the properties of this paired quantum Hall phase when the pairing energy is small, i.e., in the weak-coupling, BCS limit, where the coherence length is much ... [Phys. Rev. Lett. 106, 236801] Published Mon Jun 06, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Gyrotaxis in a Steady Vortical Flow (2011)

William M. Durham, Eric Climent, and Roman Stocker

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-07

Beschreibung: Author(s): William M. Durham, Eric Climent, and Roman Stocker We show that gyrotactic motility within a steady vortical flow leads to tightly clustered aggregations of microorganisms. Two dimensionless numbers, characterizing the relative swimming speed and stability against overturning by vorticity, govern the coupling between motility and flow. Exploration o... [Phys. Rev. Lett. 106, 238102] Published Mon Jun 06, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Search for Neutral Minimal Supersymmetric Standard Model Higgs Bosons Decaying to Tau Pairs in pp Collisions at sqrt[s]=7 TeV (2011)

S. Chatrchyan et al. (CMS Collaboration)

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-09

Beschreibung: Author(s): S. Chatrchyan et al. (CMS Collaboration) A search for neutral minimal supersymmetric standard model (MSSM) Higgs bosons in p p collisions at the LHC at a center-of-mass energy of 7 TeV is presented. The results are based on a data sample corresponding to an integrated luminosity of 36 pb -1 recorded by the CMS experiment. The search uses de... [Phys. Rev. Lett. 106, 231801] Published Wed Jun 08, 2011

Schlagwort(e): Elementary Particles and Fields

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Two-Dimensional Magnetic and Superconducting Phases in Metal-Insulator La_{2-x}Sr_{x}CuO_{4} Superlattices Measured by Muon-Spin Rotation (2011)

A. Suter, E. Morenzoni, T. Prokscha, B. M. Wojek, H. Luetkens, G. Nieuwenhuys, A. Gozar, G. Logvenov, and I. Božović

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-09

Beschreibung: Author(s): A. Suter, E. Morenzoni, T. Prokscha, B. M. Wojek, H. Luetkens, G. Nieuwenhuys, A. Gozar, G. Logvenov, and I. Božović We show, by means of low-energy muon-spin rotation measurements, that few-unit-cells thick La 2 CuO 4 layers synthesized digitally by molecular beam epitaxy are antiferromagnetically ordered. Below a thickness of about 5 CuO 2 layers the long-range ordered state breaks down, and a magnetic state appears... [Phys. Rev. Lett. 106, 237003] Published Wed Jun 08, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Pressure-Stabilized Sodium Polyhydrides: NaH_{n} (n〉1) (2011)

Pio Baettig and Eva Zurek

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-09

Beschreibung: Author(s): Pio Baettig and Eva Zurek Computations on NaH n , n =6–12 , show that NaH 9 is stable by P =25 GPa . Cmc2 1 -NaH 9 containing both H 2 and H - units is metallic at P 〉250 GPa . Other phases with only H 2 units metallize at lower pressures as a result of the partial filling of the H 2 σ u * bands by the Na 3 s electrons. Pressure induced o... [Phys. Rev. Lett. 106, 237002] Published Wed Jun 08, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Effective Temperature of Red-Blood-Cell Membrane Fluctuations (2011)

Eyal Ben-Isaac, Yong; Keun Park, Gabriel Popescu, Frank L. H. Brown, Nir S. Gov, and Yair Shokef

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-09

Beschreibung: Author(s): Eyal Ben-Isaac, YongKeun Park, Gabriel Popescu, Frank L. H. Brown, Nir S. Gov, and Yair Shokef Biologically driven nonequilibrium fluctuations are often characterized by their non-Gaussianity or by an “effective temperature”, which is frequency dependent and higher than the ambient temperature. We address these two measures theoretically by examining a randomly kicked particle, with a variabl... [Phys. Rev. Lett. 106, 238103] Published Wed Jun 08, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Formation and Stability of Synaptic Receptor Domains (2011)

Christoph A. Haselwandter, Martino Calamai, Mehran Kardar, Antoine Triller, and Rava Azeredo da Silveira

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-09

Beschreibung: Author(s): Christoph A. Haselwandter, Martino Calamai, Mehran Kardar, Antoine Triller, and Rava Azeredo da Silveira Neurotransmitter receptor molecules, concentrated in postsynaptic domains along with scaffold and a number of other molecules, are key regulators of signal transmission across synapses. Combining experiment and theory, we develop a quantitative description of synaptic receptor domains in terms of a ... [Phys. Rev. Lett. 106, 238104] Published Wed Jun 08, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Conductance of a Helical Edge Liquid Coupled to a Magnetic Impurity (2011)

Yoichi Tanaka, A. Furusaki, and K. A. Matveev

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-10

Beschreibung: Author(s): Yoichi Tanaka, A. Furusaki, and K. A. Matveev Transport in an ideal two-dimensional quantum spin Hall device is dominated by the counterpropagating edge states of electrons with opposite spins, giving the universal value of the conductance, 2 e 2 / h . We study the effect on the conductance of a magnetic impurity, which can backscatter an electron f... [Phys. Rev. Lett. 106, 236402] Published Thu Jun 09, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Quantum Walks with Non-Abelian Anyons (2011)

Lauri Lehman, Vaclav Zatloukal, Gavin K. Brennen, Jiannis K. Pachos, and Zhenghan Wang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Lauri Lehman, Vaclav Zatloukal, Gavin K. Brennen, Jiannis K. Pachos, and Zhenghan Wang We study the single particle dynamics of a mobile non-Abelian anyon hopping around many pinned anyons on a surface, by modeling it with a discrete time quantum walk. During the evolution, the spatial degree of freedom of the mobile anyon becomes entangled with the fusion degrees of freedom of the co... [Phys. Rev. Lett. 106, 230404] Published Fri Jun 10, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Resummation of Massive Gravity (2011)

Claudia de Rham, Gregory Gabadadze, and Andrew J. Tolley

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Claudia de Rham, Gregory Gabadadze, and Andrew J. Tolley We construct four-dimensional covariant nonlinear theories of massive gravity which are ghost-free in the decoupling limit to all orders. These theories resum explicitly all the nonlinear terms of an effective field theory of massive gravity. We show that away from the decoupling limit the Hamiltoni... [Phys. Rev. Lett. 106, 231101] Published Fri Jun 10, 2011

Schlagwort(e): Gravitation and Astrophysics

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Sub-Poissonian Fluctuations in a 1D Bose Gas: From the Quantum Quasicondensate to the Strongly Interacting Regime (2011)

Thibaut Jacqmin, Julien Armijo, Tarik Berrada, Karen V. Kheruntsyan, and Isabelle Bouchoule

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Thibaut Jacqmin, Julien Armijo, Tarik Berrada, Karen V. Kheruntsyan, and Isabelle Bouchoule We report on local, in situ measurements of atom number fluctuations in slices of a one-dimensional Bose gas on an atom chip setup. By using current modulation techniques to prevent cloud fragmentation, we are able to probe the crossover from weak to strong interactions. For weak interactions, fluct... [Phys. Rev. Lett. 106, 230405] Published Fri Jun 10, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Erratum: Circularly Polarized X Rays as a Probe of Noncollinear Magnetic Order in Multiferroic TbMnO_{3} [Phys. Rev. Lett. 102, 237205 (2009)] (2011)

F. Fabrizi, H. C. Walker, L. Paolasini, F. de Bergevin, A. T. Boothroyd, D. Prabhakaran, and D. F. McMorrow

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): F. Fabrizi, H. C. Walker, L. Paolasini, F. de Bergevin, A. T. Boothroyd, D. Prabhakaran, and D. F. McMorrow [Phys. Rev. Lett. 106, 239902] Published Fri Jun 10, 2011

Schlagwort(e): Errata

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Evidence for the Suppressed Decay B^{-}→DK^{-}, D→K^{+}π^{-} (2011)

Y. Horii et al. (Belle Collaboration)

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Y. Horii et al. (Belle Collaboration) The suppressed decay chain B - → D K - , D → K + π - , where D indicates a D ̅ 0 or D 0 state, provides important information on the C P -violating angle ϕ 3 . We measure the ratio R D K of the decay rates to the favored mode B - → D K - , D → K - π + to be R D K =[1.63 -0.41 +0.44 (stat) -0.13 +0.07 (syst)]×10 -2 , which indicates t... [Phys. Rev. Lett. 106, 231803] Published Fri Jun 10, 2011

Schlagwort(e): Elementary Particles and Fields

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Ordering of Small Particles in One-Dimensional Coherent Structures by Time-Periodic Flows (2011)

D. O. Pushkin, D. E. Melnikov, and V. M. Shevtsova

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): D. O. Pushkin, D. E. Melnikov, and V. M. Shevtsova Small particles transported by a fluid medium do not necessarily have to follow the flow. We show that for a wide class of time-periodic incompressible flows inertial particles have a tendency to spontaneously align in one-dimensional dynamic coherent structures. This effect may take place for parti... [Phys. Rev. Lett. 106, 234501] Published Fri Jun 10, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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New Class of Effective Field Theories from Embedded Branes (2011)

Garrett L. Goon, Kurt Hinterbichler, and Mark Trodden

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Garrett L. Goon, Kurt Hinterbichler, and Mark Trodden We present a new general class of four-dimensional effective field theories with interesting global symmetry groups. These theories arise from purely gravitational actions for ( 3+1 )-dimensional branes embedded in higher dimensional spaces with induced gravity terms. The simplest example is the well ... [Phys. Rev. Lett. 106, 231102] Published Fri Jun 10, 2011

Schlagwort(e): Gravitation and Astrophysics

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Photoabsorption of Ag_{N}(N∼6–6000) Nanoclusters Formed in Helium Droplets: Transition from Compact to Multicenter Aggregation (2011)

Evgeny Loginov, Luis F. Gomez, Naihao Chiang, Avik Halder, Nicholas Guggemos, Vitaly V. Kresin, and Andrey F. Vilesov

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Evgeny Loginov, Luis F. Gomez, Naihao Chiang, Avik Halder, Nicholas Guggemos, Vitaly V. Kresin, and Andrey F. Vilesov Ag N clusters with up to thousands of atoms were grown in large He droplets and studied by optical spectroscopy. For N ≲10 3 the spectra are dominated by a surface plasmon resonance near 3.8 eV and a broad feature in the UV, consistent with absorption by individual metallic particles. Larger clusters r... [Phys. Rev. Lett. 106, 233401] Published Fri Jun 10, 2011

Schlagwort(e): Atomic, Molecular, and Optical Physics

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Young-Type Interference in Projectile-Electron Loss in Energetic Ion-Molecule Collisions (2011)

A. B. Voitkiv, B. Najjari, D. Fischer, A. N. Artemyev, and A. Surzhykov

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): A. B. Voitkiv, B. Najjari, D. Fischer, A. N. Artemyev, and A. Surzhykov Under certain conditions an electron bound in a fast projectile ion, colliding with a molecule, interacts mainly with the nuclei and inner shell electrons of atoms forming the molecule. Because of their compact localization in space and distinct separation from each other, these molecular centers pl... [Phys. Rev. Lett. 106, 233202] Published Fri Jun 10, 2011

Schlagwort(e): Atomic, Molecular, and Optical Physics

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Loss of Coherence in Dynamical Networks: Spatial Chaos and Chimera States (2011)

Iryna Omelchenko, Yuri Maistrenko, Philipp Hövel, and Eckehard Schöll

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Iryna Omelchenko, Yuri Maistrenko, Philipp Hövel, and Eckehard Schöll We discuss the breakdown of spatial coherence in networks of coupled oscillators with nonlocal interaction. By systematically analyzing the dependence of the spatiotemporal dynamics on the range and strength of coupling, we uncover a dynamical bifurcation scenario for the coherence-incoherence trans... [Phys. Rev. Lett. 106, 234102] Published Fri Jun 10, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Ultrahigh-Energy Neutrino-Nucleon Deep-Inelastic Scattering and the Froissart Bound (2011)

Alexey Yu. Illarionov, Bernd A. Kniehl, and Anatoly V. Kotikov

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Alexey Yu. Illarionov, Bernd A. Kniehl, and Anatoly V. Kotikov We present a simple formula for the total cross section σ ν N of neutral- and charged-current deep-inelastic scattering of ultrahigh-energy neutrinos on isoscalar nuclear targets, which is proportional to the structure function F 2 ν N ( M V 2 / s , M V 2 ) , where M V is the intermediate-boson mass and s is the squa... [Phys. Rev. Lett. 106, 231802] Published Fri Jun 10, 2011

Schlagwort(e): Elementary Particles and Fields

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Molecular Origins of DNA Flexibility: Sequence Effects on Conformational and Mechanical Properties (2011)

Vanessa Ortiz and Juan J. de Pablo

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Vanessa Ortiz and Juan J. de Pablo A central question in biophysics is whether DNA sequence affects its mechanical properties, which are thought to influence nucleosome positioning and gene expression. Previous attempts to answer this question have been hindered by an inability to resolve DNA structure and dynamics at the base-pair l... [Phys. Rev. Lett. 106, 238107] Published Fri Jun 10, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Semiclassical Strings in AdS_{5}×S^{5} and Automorphic Functions (2011)

Michael Pawellek

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): Michael Pawellek Using anti–de Sitter-space/conformal-field-theory correspondence we derive from the folded spinning string ordinary differential equations for the anomalous dimension of the dual N =4 super Yang-Mills theory twist-two operators at strong coupling. We show that for large spin the asymptotic solutions ... [Phys. Rev. Lett. 106, 241601] Published Tue Jun 14, 2011

Schlagwort(e): Elementary Particles and Fields

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Publisher’s Note: Experimental State Tomography of Itinerant Single Microwave Photons [Phys. Rev. Lett. 106, 220503 (2011)] (2011)

C. Eichler, D. Bozyigit, C. Lang, L. Steffen, J. Fink, and A. Wallraff

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): C. Eichler, D. Bozyigit, C. Lang, L. Steffen, J. Fink, and A. Wallraff [Phys. Rev. Lett. 106, 249901] Published Tue Jun 14, 2011

Schlagwort(e): Errata

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Four Dimensional Superconformal Index from q-Deformed Two Dimensional Yang-Mills Theory (2011)

Abhijit Gadde, Leonardo Rastelli, Shlomo S. Razamat, and Wenbin Yan (颜文斌)

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-17

Beschreibung: Author(s): Abhijit Gadde, Leonardo Rastelli, Shlomo S. Razamat, and Wenbin Yan (颜文斌) We show that the superconformal index (the partition function on the three-sphere times a circle) of a certain class of 4D supersymmetric field theories is exactly equal to a partition function of q -deformed nonsupersymmetric 2D Yang-Mills theory. [Phys. Rev. Lett. 106, 241602] Published Thu Jun 16, 2011

Schlagwort(e): Elementary Particles and Fields

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Magnetostructural Transitions in a Frustrated Magnet at High Fields (2011)

V. Tsurkan, S. Zherlitsyn, V. Felea, S. Yasin, Yu. Skourski, J. Deisenhofer, H.-A. Krug von Nidda, P. Lemmens, J. Wosnitza, and A. Loidl

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-17

Beschreibung: Author(s): V. Tsurkan, S. Zherlitsyn, V. Felea, S. Yasin, Yu. Skourski, J. Deisenhofer, H.-A. Krug von Nidda, P. Lemmens, J. Wosnitza, and A. Loidl Ultrasound and magnetization studies of bond-frustrated ZnCr 2 S 4 spinel are performed in static magnetic fields up to 18 T and in pulsed fields up to 62 T. At temperatures below the antiferromagnetic transition at T N 1 ≈14 K , the sound velocity as a function of the magnetic field reveals a sequence of... [Phys. Rev. Lett. 106, 247202] Published Thu Jun 16, 2011

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Direct Determination of the Size of Basins of Attraction of Jammed Solids (2011)

Ning Xu, Daan Frenkel, and Andrea J. Liu

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-18

Beschreibung: Author(s): Ning Xu, Daan Frenkel, and Andrea J. Liu We propose a free-energy-based Monte Carlo method to measure the volume of potential-energy basins in configuration space. Using this approach we can estimate the number of distinct potential-energy minima, even when this number is much too large to be sampled directly. We validate our approach by c... [Phys. Rev. Lett. 106, 245502] Published Fri Jun 17, 2011

Schlagwort(e): Condensed Matter: Structure, etc.

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Stress Enhancement in the Delayed Yielding of Colloidal Gels (2011)

Joris Sprakel, Stefan B. Lindström, Thomas E. Kodger, and David A. Weitz

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-18

Beschreibung: Author(s): Joris Sprakel, Stefan B. Lindström, Thomas E. Kodger, and David A. Weitz Networks of aggregated colloidal particles are solidlike and can sustain an applied shear stress while exhibiting little or no creep; however, ultimately they will catastrophically fail. We show that the time delay for this yielding decreases in two distinct exponential regimes with applied stress. ... [Phys. Rev. Lett. 106, 248303] Published Fri Jun 17, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Measurement of the B^{0} Production Cross Section in pp Collisions at sqrt[s]=7 TeV (2011)

S. Chatrchyan et al. (CMS Collaboration)

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): S. Chatrchyan et al. (CMS Collaboration) Measurements of the differential production cross sections d σ / d p T B and d σ / d y B for B 0 mesons produced in p p collisions at √ s =7 TeV are presented. The data set used was collected by the CMS experiment at the LHC and corresponds to an integrated luminosity of 40 pb -1 . The production cross section is ... [Phys. Rev. Lett. 106, 252001] Published Mon Jun 20, 2011

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Theory of High-Temperature Multiferroicity in Cupric Oxide (2011)

Pierre Tolédano, Naëmi Leo, Dmitry D. Khalyavin, Laurent C. Chapon, Tim Hoffmann, Dennis Meier, and Manfred Fiebig

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): Pierre Tolédano, Naëmi Leo, Dmitry D. Khalyavin, Laurent C. Chapon, Tim Hoffmann, Dennis Meier, and Manfred Fiebig The incommensurate-commensurate phases reported in cupric oxide below 230 K are shown theoretically to realize an inverted sequence of symmetry-breaking mechanisms with respect to the usual sequence occurring in low-temperature multiferroic compounds. The sequence inversion results from a strong tri... [Phys. Rev. Lett. 106, 257601] Published Mon Jun 20, 2011

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Isotope Quantum Effects on the Water Proton Mean Kinetic Energy (2011)

A. Giuliani, F. Bruni, M. A. Ricci, and M. A. Adams

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): A. Giuliani, F. Bruni, M. A. Ricci, and M. A. Adams A deep inelastic neutron scattering experiment, performed on D 2 O in the stable and metastable liquid phases, provides evidence for isotope quantum effects in the proton or deuteron single particle dynamics along the hydrogen bond. The deuteron mean kinetic energy extracted from the experimental data... [Phys. Rev. Lett. 106, 255502] Published Wed Jun 22, 2011

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From Single Particle to Superfluid Excitations in a Dissipative Polariton Gas (2011)

V. Kohnle, Y. Léger, M. Wouters, M. Richard, M. T. Portella-Oberli, and B. Deveaud-Plédran

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): V. Kohnle, Y. Léger, M. Wouters, M. Richard, M. T. Portella-Oberli, and B. Deveaud-Plédran Using an angle-resolved heterodyne four-wave-mixing technique, we probe the low momentum excitation spectrum of a coherent polariton gas. The experimental results are well captured by the Bogoliubov transformation which describes the transition from single particle excitations of a normal fluid to s... [Phys. Rev. Lett. 106, 255302] Published Wed Jun 22, 2011

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Publisher’s Note: Experimental State Tomography of Itinerant Single Microwave Photons [Phys. Rev. Lett. 106, 220503 (2011)] (2011)

C. Eichler, D. Bozyigit, C. Lang, L. Steffen, J. Fink, and A. Wallraff

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): C. Eichler, D. Bozyigit, C. Lang, L. Steffen, J. Fink, and A. Wallraff [Phys. Rev. Lett. 106, 259903] Published Wed Jun 22, 2011

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Comment on “Violation of Anderson’s Theorem for the Sign-Reversing s-Wave State of Iron-Pnictide Superconductors” (2011)

Yunkyu Bang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-24

Beschreibung: Author(s): Yunkyu Bang A Comment on the Letter by Seiichiro Onari and Hiroshi Kontani, Phys. Rev. Lett. 103 , 177001 (2009) . The authors of the Letter offer a Reply. [Phys. Rev. Lett. 106, 259701] Published Thu Jun 23, 2011

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Mixed-Spin Pairing Condensates in Heavy Nuclei (2011)

Alexandros Gezerlis, G. F. Bertsch, and Y. L. Luo

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-24

Beschreibung: Author(s): Alexandros Gezerlis, G. F. Bertsch, and Y. L. Luo We show that the Bogoliubov–de Gennes equations for nuclear ground-state wave functions support solutions in which the condensate has a mixture of spin-singlet and spin-triplet pairing. We find that such mixed-spin condensates do not occur when there are equal numbers of neutrons and protons, but on... [Phys. Rev. Lett. 106, 252502] Published Thu Jun 23, 2011

Schlagwort(e): Nuclear Physics

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Quantum Receiver beyond the Standard Quantum Limit of Coherent Optical Communication (2011)

Kenji Tsujino, Daiji Fukuda, Go Fujii, Shuichiro Inoue, Mikio Fujiwara, Masahiro Takeoka, and Masahide Sasaki

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Kenji Tsujino, Daiji Fukuda, Go Fujii, Shuichiro Inoue, Mikio Fujiwara, Masahiro Takeoka, and Masahide Sasaki The most efficient modern optical communication is known as coherent communication, and its standard quantum limit is almost reachable with current technology. Though it has been predicted for a long time that this standard quantum limit could be overcome via quantum mechanically optimized receivers... [Phys. Rev. Lett. 106, 250503] Published Fri Jun 24, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Topological Signatures of Globular Polymers (2011)

M. Baiesi, E. Orlandini, A. L. Stella, and F. Zonta

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): M. Baiesi, E. Orlandini, A. L. Stella, and F. Zonta Simulations in which a globular ring polymer with delocalized knots is separated in two interacting loops by a slipping link, or in two noninteracting globuli by a wall with a hole, show how the minimal crossing number of the knots controls the equilibrium statistics. With slipping link the ring len... [Phys. Rev. Lett. 106, 258301] Published Fri Jun 24, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Extremal Quantum Correlations and Cryptographic Security (2011)

T. Franz, F. Furrer, and R. F. Werner

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): T. Franz, F. Furrer, and R. F. Werner We investigate a fundamental property of device-independent security in quantum cryptography by characterizing probability distributions which are necessarily independent of the measurement results of any eavesdropper. We show that probability distributions that are secure in this sense are exactly ... [Phys. Rev. Lett. 106, 250502] Published Fri Jun 24, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Pure Connection Action Principle for General Relativity (2011)

Kirill Krasnov

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Kirill Krasnov It has already been known for two decades that general relativity can be reformulated as a certain gauge theory, so that the only dynamical field is an SO(3) connection and the spacetime metric appears as a derived object. However, no simple action principle realizing these ideas has been available.... [Phys. Rev. Lett. 106, 251103] Published Fri Jun 24, 2011

Schlagwort(e): Gravitation and Astrophysics

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Comment on “Do Gluons Carry Half of the Nucleon Momentum?” (2011)

Xiangdong Ji

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In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Xiangdong Ji A Comment on the Letter by Xiang-Song Chen et al. , Phys. Rev. Lett. 103 , 062001 (2009). [Phys. Rev. Lett. 106, 259101] Published Fri Jun 24, 2011

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Resonant Two-Photon Single Ionization of Two Identical Atoms (2011)

C. Müller and A. B. Voitkiv

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-28

Beschreibung: Author(s): C. Müller and A. B. Voitkiv Resonant two-photon single ionization in a system consisting of two spatially well-separated identical atoms is studied. Because of two-center electron-electron correlations, the ionization may also proceed through photoexcitation of both atoms with subsequent interatomic Coulombic decay. We show th... [Phys. Rev. Lett. 107, 013001] Published Mon Jun 27, 2011

Schlagwort(e): Atomic, Molecular, and Optical Physics

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Bonus Yangian Symmetry for the Planar S Matrix of N=4 Supersymmetric Yang-Mills Theory (2011)

Niklas Beisert and Burkhard U. W. Schwab

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-08

Beschreibung: Author(s): Niklas Beisert and Burkhard U. W. Schwab Recent developments in the determination of the planar S matrix of N =4 super Yang-Mills are closely related to its Yangian symmetry. Here we provide evidence for a yet unobserved additional symmetry: the Yangian level-one helicity operator. [Phys. Rev. Lett. 106, 231602] Published Tue Jun 07, 2011

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Hexatic Phase in the Two-Dimensional Gaussian-Core Model (2011)

Santi Prestipino, Franz Saija, and Paolo V. Giaquinta

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Santi Prestipino, Franz Saija, and Paolo V. Giaquinta We present a Monte Carlo simulation study of the phase behavior of two-dimensional classical particles repelling each other through an isotropic Gaussian potential. As in the analogous three-dimensional case, a reentrant-melting transition occurs upon compression for not too high temperatures, along... [Phys. Rev. Lett. 106, 235701] Published Fri Jun 10, 2011

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Spin-Polarized Scanning-Tunneling Probe for Helical Luttinger Liquids (2011)

Sourin Das and Sumathi Rao

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Sourin Das and Sumathi Rao We propose a three-terminal spin-polarized STM setup for probing the helical nature of the Luttinger liquid edge state that appears in the quantum spin Hall system. We show that the three-terminal tunneling conductance depends on the angle ( θ ) between the magnetization direction of the tip and the l... [Phys. Rev. Lett. 106, 236403] Published Fri Jun 10, 2011

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BiFeO_{3} Films under Tensile Epitaxial Strain from First Principles (2011)

B. Dupé, S. Prosandeev, G. Geneste, B. Dkhil, and L. Bellaiche

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): B. Dupé, S. Prosandeev, G. Geneste, B. Dkhil, and L. Bellaiche Density-functional calculations are performed to predict structural and magnetic properties of (001) BiFeO 3 films under tensile epitaxial strain. These films remain monoclinic ( C c space group) for misfit strains between 0% and ≈8% , with the polarization, tilt axis and magnetization all rotating when... [Phys. Rev. Lett. 106, 237601] Published Fri Jun 10, 2011

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Anomalous Spin-Resolved Point-Contact Transmission of Holes due to Cubic Rashba Spin-Orbit Coupling (2011)

Stefano Chesi, Gabriele F. Giuliani, L. P. Rokhinson, L. N. Pfeiffer, and K. W. West

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Stefano Chesi, Gabriele F. Giuliani, L. P. Rokhinson, L. N. Pfeiffer, and K. W. West Evidence is presented for the finite wave vector crossing of the two lowest one-dimensional spin-split subbands in quantum point contacts fabricated from two-dimensional hole gases with strong spin-orbit interaction. This phenomenon offers an elegant explanation for the anomalous sign of the spin po... [Phys. Rev. Lett. 106, 236601] Published Fri Jun 10, 2011

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Excess Electron Localization in Solvated DNA Bases (2011)

Maeve Smyth and Jorge Kohanoff

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Maeve Smyth and Jorge Kohanoff We present a first-principles molecular dynamics study of an excess electron in condensed phase models of solvated DNA bases. Calculations on increasingly large microsolvated clusters taken from liquid phase simulations show that adiabatic electron affinities increase systematically upon solvation, ... [Phys. Rev. Lett. 106, 238108] Published Fri Jun 10, 2011

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Label-Free Bond-Selective Imaging by Listening to Vibrationally Excited Molecules (2011)

Han-Wei Wang, Ning Chai, Pu Wang, Song Hu, Wei Dou, David Umulis, Lihong V. Wang, Michael Sturek, Robert Lucht, and Ji-Xin Cheng

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Han-Wei Wang, Ning Chai, Pu Wang, Song Hu, Wei Dou, David Umulis, Lihong V. Wang, Michael Sturek, Robert Lucht, and Ji-Xin Cheng We report the realization of vibrational photoacoustic (VPA) microscopy using optical excitation of molecular overtone vibration and acoustic detection of the resultant pressure transients. Our approach eliminates the tissue scattering problem encountered in near-infrared spectroscopy and enables de... [Phys. Rev. Lett. 106, 238106] Published Fri Jun 10, 2011

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Preformed Excitonic Liquid Route to a Charge Density Wave in 2H-TaSe_{2} (2011)

A. Taraphder, S. Koley, N. S. Vidhyadhiraja, and M. S. Laad

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): A. Taraphder, S. Koley, N. S. Vidhyadhiraja, and M. S. Laad Recent experiments on 2H-TaSe 2 contradict the long-held view of the charge density wave arising from a nested band structure. An intrinsically strong coupling view, involving a charge density wave state arising as a Bose condensation of preformed excitons emerges as an attractive, albeit scantily in... [Phys. Rev. Lett. 106, 236405] Published Fri Jun 10, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Entangled Inputs Cannot Make Imperfect Quantum Channels Perfect (2011)

F. G. S. L. Brandão, J. Eisert, M. Horodecki, and D. Yang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): F. G. S. L. Brandão, J. Eisert, M. Horodecki, and D. Yang Entangled inputs can enhance the capacity of quantum channels, this being one of the consequences of the celebrated result showing the nonadditivity of several quantities relevant for quantum information science. In this work, we answer the converse question (whether entangled inputs can ever render... [Phys. Rev. Lett. 106, 230502] Published Fri Jun 10, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Multiscale Model of an Inhibitory Network Shows Optimal Properties near Bifurcation (2011)

Christopher L. Buckley and Thomas Nowotny

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Christopher L. Buckley and Thomas Nowotny We present a systematic multiscale reduction of a biologically plausible model of the inhibitory neuronal network of the pheromone system of the moth. Starting from a Hodgkin-Huxley conductance based model we adiabatically eliminate fast variables and quantitatively reduce the model to mean field eq... [Phys. Rev. Lett. 106, 238109] Published Fri Jun 10, 2011

Schlagwort(e): Soft Matter, Biological, and Interdisciplinary Physics

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Exciton Transport and Andreev Reflection in a Bilayer Quantum Hall System (2011)

A. D. K. Finck, J. P. Eisenstein, L. N. Pfeiffer, and K. W. West

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): A. D. K. Finck, J. P. Eisenstein, L. N. Pfeiffer, and K. W. West We demonstrate that counterflowing electrical currents can move through the bulk of the excitonic quantized Hall phase found in bilayer two-dimensional electron systems (2DES) even as charged excitations cannot. These counterflowing currents are transported by neutral excitons which are emitted and ... [Phys. Rev. Lett. 106, 236807] Published Fri Jun 10, 2011

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Resonantly Interacting Fermions in a Box (2011)

Michael McNeil Forbes, Stefano Gandolfi, and Alexandros Gezerlis

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Michael McNeil Forbes, Stefano Gandolfi, and Alexandros Gezerlis We use two fundamental theoretical frameworks to study the finite-size (shell) properties of the unitary gas in a periodic box: (1) an ab initio quantum Monte Carlo (QMC) calculation for boxes containing 4 to 130 particles provides a precise and complete characterization of the finite-size behavior,... [Phys. Rev. Lett. 106, 235303] Published Fri Jun 10, 2011

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Temporal Griffiths Phases (2011)

Federico Vazquez, Juan A. Bonachela, Cristóbal López, and Miguel A. Muñoz

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Federico Vazquez, Juan A. Bonachela, Cristóbal López, and Miguel A. Muñoz Disorder is an unavoidable ingredient of real systems. Spatial disorder generates Griffiths phases (GPs) which, in analogy to critical points, are characterized by a slow relaxation of the order parameter and divergences of quantities such as the susceptibility. However, these singularities appear i... [Phys. Rev. Lett. 106, 235702] Published Fri Jun 10, 2011

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Large Isosymmetric Reorientation of Oxygen Octahedra Rotation Axes in Epitaxially Strained Perovskites (2011)

James M. Rondinelli and Sinisa Coh

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): James M. Rondinelli and Sinisa Coh Using first-principles density functional theory calculations, we discover an anomalously large biaxial strain-induced octahedral rotation axis reorientation in orthorhombic perovskites with tendency towards rhombohedral symmetry. The transition between crystallographically equivalent (isosymmetric)... [Phys. Rev. Lett. 106, 235502] Published Fri Jun 10, 2011

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Electronic Structure via Potential Functional Approximations (2011)

Attila Cangi, Donghyung Lee, Peter Elliott, Kieron Burke, and E. K. U. Gross

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): Attila Cangi, Donghyung Lee, Peter Elliott, Kieron Burke, and E. K. U. Gross The universal functional of Hohenberg-Kohn is given as a coupling-constant integral over the density as a functional of the potential. Conditions are derived under which potential -functional approximations are variational. Construction via this method and imposition of these conditions are shown to ... [Phys. Rev. Lett. 106, 236404] Published Fri Jun 10, 2011

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Direct Imaging of Two-State Dynamics on the Amorphous Silicon Surface (2011)

S. Ashtekar, G. Scott, J. Lyding, and M. Gruebele

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): S. Ashtekar, G. Scott, J. Lyding, and M. Gruebele Amorphous silicon is an important material, amidst a debate whether or not it is a glass. We produce amorphous Si surfaces by ion bombardment and vapor growth, and image discrete Si clusters which hop by two-state dynamics at 295 K. Independent of surface preparation, these clusters have an average ... [Phys. Rev. Lett. 106, 235501] Published Fri Jun 10, 2011

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Quantum Quench of an Atomic Mott Insulator (2011)

David Chen, Matthew White, Cecilia Borries, and Brian De; Marco

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): David Chen, Matthew White, Cecilia Borries, and Brian DeMarco We study quenches across the Bose-Hubbard Mott-insulator-to-superfluid quantum phase transition by using an ultracold atomic gas trapped in an optical lattice. Quenching from the Mott insulator to the superfluid phase is accomplished by continuously tuning the ratio of Hubbard tunneling to interacti... [Phys. Rev. Lett. 106, 235304] Published Fri Jun 10, 2011

Schlagwort(e): Condensed Matter: Structure, etc.

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Neoclassical Transport Including Collisional Nonlinearity (2011)

J. Candy and E. A. Belli

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-11

Beschreibung: Author(s): J. Candy and E. A. Belli In the standard δ f theory of neoclassical transport, the zeroth-order (Maxwellian) solution is obtained analytically via the solution of a nonlinear equation. The first-order correction δ f is subsequently computed as the solution of a linear, inhomogeneous equation that includes the linearized Fokke... [Phys. Rev. Lett. 106, 235003] Published Fri Jun 10, 2011

Schlagwort(e): Plasma and Beam Physics

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Anomalous Meissner Effect in a Normal-Metal–Superconductor Junction with a Spin-Active Interface (2011)

Takehito Yokoyama, Yukio Tanaka, and Naoto Nagaosa

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-14

Beschreibung: Author(s): Takehito Yokoyama, Yukio Tanaka, and Naoto Nagaosa We investigate Meissner effect in normal-metal–superconductor junctions where the interface is spin active. We find that orbital magnetic susceptibility of the normal metal shows highly nontrivial behavior. In particular, the magnetic susceptibility depends on the temperature in an oscillatory fashi... [Phys. Rev. Lett. 106, 246601] Published Mon Jun 13, 2011

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Measurement of Electron-Hole Friction in an n-Doped GaAs/AlGaAs Quantum Well Using Optical Transient Grating Spectroscopy (2011)

Luyi Yang, J. D. Koralek, J. Orenstein, D. R. Tibbetts, J. L. Reno, and M. P. Lilly

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-14

Beschreibung: Author(s): Luyi Yang, J. D. Koralek, J. Orenstein, D. R. Tibbetts, J. L. Reno, and M. P. Lilly We use phase-resolved transient grating spectroscopy to measure the drift and diffusion of electron-hole density waves in a semiconductor quantum well. The unique aspects of this optical probe allow us to determine the frictional force between a two-dimensional Fermi liquid of electrons and a dilute... [Phys. Rev. Lett. 106, 247401] Published Mon Jun 13, 2011

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Direct Two-Dimensional Measurements of the Field-Aligned Current Associated with Plasma Blobs (2011)

I. Furno, M. Spolaore, C. Theiler, N. Vianello, R. Cavazzana, and A. Fasoli

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-14

Beschreibung: Author(s): I. Furno, M. Spolaore, C. Theiler, N. Vianello, R. Cavazzana, and A. Fasoli In simple magnetized toroidal plasmas, field-aligned blobs originate from ideal interchange waves and propagate radially outward under the effect of ∇ B and curvature induced E × B drifts. We report on the first experimental two-dimensional measurements of the field-aligned current associated with blob... [Phys. Rev. Lett. 106, 245001] Published Mon Jun 13, 2011

Schlagwort(e): Plasma and Beam Physics

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Magnetized Plasma for Reconfigurable Subdiffraction Imaging (2011)

Shuang Zhang, Yi Xiong, Guy Bartal, Xiaobo Yin, and Xiang Zhang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-14

Beschreibung: Author(s): Shuang Zhang, Yi Xiong, Guy Bartal, Xiaobo Yin, and Xiang Zhang We show that magnetized plasma with appropriately designed parameters supports nearly diffractionless propagation of electromagnetic waves along the direction of the applied magnetic field, arising from their unbounded equifrequency contour in the magnetized plasma. Such a unique feature can be util... [Phys. Rev. Lett. 106, 243901] Published Mon Jun 13, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Excess Clustering on Large Scales in the MegaZ DR7 Photometric Redshift Survey (2011)

Shaun A. Thomas, Filipe B. Abdalla, and Ofer Lahav

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-14

Beschreibung: Author(s): Shaun A. Thomas, Filipe B. Abdalla, and Ofer Lahav We observe a large excess of power in the statistical clustering of luminous red galaxies in the photometric SDSS galaxy sample called MegaZ DR7. This is seen over the lowest multipoles in the angular power spectra C ℓ in four equally spaced redshift bins between 0.45≤ z ≤0.65 . However, it is most prom... [Phys. Rev. Lett. 106, 241301] Published Mon Jun 13, 2011

Schlagwort(e): Gravitation and Astrophysics

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Robust Dynamical Decoupling for Quantum Computing and Quantum Memory (2011)

Alexandre M. Souza, Gonzalo A. Álvarez, and Dieter Suter

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): Alexandre M. Souza, Gonzalo A. Álvarez, and Dieter Suter Dynamical decoupling (DD) is a popular technique for protecting qubits from the environment. However, unless special care is taken, experimental errors in the control pulses used in this technique can destroy the quantum information instead of preserving it. Here, we investigate techniques for makin... [Phys. Rev. Lett. 106, 240501] Published Tue Jun 14, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Structured Optical Receivers to Attain Superadditive Capacity and the Holevo Limit (2011)

Saikat Guha

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): Saikat Guha Attaining the ultimate (Holevo) limit to the classical capacity of a quantum channel requires the receiver to make joint measurements over long code-word blocks. For a pure-state channel, we show that the Holevo limit can be attained by a receiver that uses a multisymbol unitary transformation on th... [Phys. Rev. Lett. 106, 240502] Published Tue Jun 14, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Ultimate State of Two-Dimensional Rayleigh-Bénard Convection between Free-Slip Fixed-Temperature Boundaries (2011)

Jared P. Whitehead and Charles R. Doering

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): Jared P. Whitehead and Charles R. Doering Rigorous upper limits on the vertical heat transport in two-dimensional Rayleigh-Bénard convection between stress-free isothermal boundaries are derived from the Boussinesq approximation of the Navier-Stokes equations. The Nusselt number Nu is bounded in terms of the Rayleigh number Ra according to ... [Phys. Rev. Lett. 106, 244501] Published Tue Jun 14, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Magnetic Bond-Order Potential for Iron (2011)

M. Mrovec, D. Nguyen-Manh, C. Elsässer, and P. Gumbsch

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): M. Mrovec, D. Nguyen-Manh, C. Elsässer, and P. Gumbsch We present a magnetic bond-order potential (BOP) that is able to provide a correct description of both directional covalent bonds and magnetic interactions in iron. This potential, based on the tight binding approximation and the Stoner model of itinerant magnetism, forms a direct bridge between the... [Phys. Rev. Lett. 106, 246402] Published Tue Jun 14, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Electron Localization in Defective Ceria Films: A Study with Scanning-Tunneling Microscopy and Density-Functional Theory (2011)

Jan-Frederik Jerratsch, Xiang Shao, Niklas Nilius, Hans-Joachim Freund, Cristina Popa, M. Veronica Ganduglia-Pirovano, Asbjörn M. Burow, and Joachim Sauer

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): Jan-Frederik Jerratsch, Xiang Shao, Niklas Nilius, Hans-Joachim Freund, Cristina Popa, M. Veronica Ganduglia-Pirovano, Asbjörn M. Burow, and Joachim Sauer Scanning-tunneling microscopy and density-functional theory have been employed to identify the spatial correlation between an oxygen vacancy and the associated Ce 3+ ion pair in a defective CeO 2 (111) film. The two Ce 3+ ions can occupy different cationic shells around the vacancy. The resulting variat... [Phys. Rev. Lett. 106, 246801] Published Tue Jun 14, 2011

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Swift Loss of Coherence of Soliton Trains in Attractive Bose-Einstein Condensates (2011)

Alexej I. Streltsov, Ofir E. Alon, and Lorenz S. Cederbaum

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): Alexej I. Streltsov, Ofir E. Alon, and Lorenz S. Cederbaum Experiments on ultracold attractive Bose-Einstein condensates (BECs) have demonstrated that at low dimensions atomic clouds can form localized objects, propagating for long times without significant changes in their shapes and attributed to bright matter-wave solitons, which are coherent objects. We... [Phys. Rev. Lett. 106, 240401] Published Tue Jun 14, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Model Independence in Two Dimensions and Polarized Cold Dipolar Molecules (2011)

A. G. Volosniev, D. V. Fedorov, A. S. Jensen, and N. T. Zinner

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): A. G. Volosniev, D. V. Fedorov, A. S. Jensen, and N. T. Zinner We calculate the energy and wave functions of two particles confined to two spatial dimensions interacting via arbitrary anisotropic potentials with negative or zero net volume. The general rigorous analytic expressions are given in the weak coupling limit where universality or model independence ar... [Phys. Rev. Lett. 106, 250401] Published Mon Jun 20, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Sequential Projective Measurements for Channel Decoding (2011)

Seth Lloyd, Vittorio Giovannetti, and Lorenzo Maccone

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): Seth Lloyd, Vittorio Giovannetti, and Lorenzo Maccone We study the transmission of classical information in quantum channels. We present a decoding procedure that is very simple but still achieves the channel capacity. It is used to give an alternative straightforward proof that the classical capacity is given by the regularized Holevo bound. This proc... [Phys. Rev. Lett. 106, 250501] Published Mon Jun 20, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Rotation and Translational Motion prior to Self-Assembly: Dynamics of Ethanethiolate on Cu(111) (2011)

S. Paterson, W. Allison, H. Hedgeland, J. Ellis, and A. P. Jardine

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): S. Paterson, W. Allison, H. Hedgeland, J. Ellis, and A. P. Jardine We investigate the dynamics of low-coverage ethanethiolate on Cu(111) using helium spin-echo spectroscopy. Above 210 K, the measurements are dominated by translational hopping with an activation energy of only 86±5 meV . At lower temperatures (150–210 K) a further process becomes apparent which has ... [Phys. Rev. Lett. 106, 256101] Published Mon Jun 20, 2011

Schlagwort(e): Condensed Matter: Structure, etc.

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Static Friction Coefficient Is Not a Material Constant (2011)

Oded Ben-David and Jay Fineberg

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): Oded Ben-David and Jay Fineberg The static friction coefficient between two materials is considered to be a material constant. We present experiments demonstrating that the ratio of shear to normal force needed to move contacting bodies can, instead, vary systematically with controllable changes in the external loading configurati... [Phys. Rev. Lett. 106, 254301] Published Mon Jun 20, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Dynamics of Nanoscale Precursor Film near a Moving Contact Line of Spreading Drops (2011)

A. Hoang and H. P. Kavehpour

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-21

Beschreibung: Author(s): A. Hoang and H. P. Kavehpour The spreading of liquids on solids is a commonplace phenomenon, discernible in various instances of everyday life. Despite the apparent simplicity of spreading, the underlying mechanisms are still not fully understood on a microscopic level, particularly at the moving edge between liquid and solid k... [Phys. Rev. Lett. 106, 254501] Published Mon Jun 20, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Neutron Skin of ^{208}Pb, Nuclear Symmetry Energy, and the Parity Radius Experiment (2011)

X. Roca-Maza, M. Centelles, X. Viñas, and M. Warda

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-22

Beschreibung: Author(s): X. Roca-Maza, M. Centelles, X. Viñas, and M. Warda A precise determination of the neutron skin Δ r n p of a heavy nucleus sets a basic constraint on the nuclear symmetry energy ( Δ r n p is the difference of the neutron and proton rms radii of the nucleus). The parity radius experiment (PREX) may achieve it by electroweak parity-violating electron scatteri... [Phys. Rev. Lett. 106, 252501] Published Tue Jun 21, 2011

Schlagwort(e): Nuclear Physics

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Collimated Fast Electron Emission from Long Wires Irradiated by Intense Femtosecond Laser Pulses (2011)

Shigeki Tokita, Kazuto Otani, Toshihiko Nishoji, Shunsuke Inoue, Masaki Hashida, and Shuji Sakabe

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): Shigeki Tokita, Kazuto Otani, Toshihiko Nishoji, Shunsuke Inoue, Masaki Hashida, and Shuji Sakabe We have experimentally demonstrated that fast electrons emitted from a metallic wire irradiated by a 5×10 18 W/cm 2 laser pulse can be collimated along the wire, and that their intensity is significantly enhanced in the axial direction of the wire. As the wire length is increased up to 30 mm from the... [Phys. Rev. Lett. 106, 255001] Published Wed Jun 22, 2011

Schlagwort(e): Plasma and Beam Physics

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Resolved Atomic Interaction Sidebands in an Optical Clock Transition (2011)

M. Bishof, Y. Lin, M. D. Swallows, A. V. Gorshkov, J. Ye, and A. M. Rey

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): M. Bishof, Y. Lin, M. D. Swallows, A. V. Gorshkov, J. Ye, and A. M. Rey We report the observation of resolved atomic interaction sidebands (ISB) in the 87 Sr optical clock transition when atoms at microkelvin temperatures are confined in a two-dimensional optical lattice. The ISB are a manifestation of the strong interactions that occur between atoms confined in a quasi-... [Phys. Rev. Lett. 106, 250801] Published Wed Jun 22, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Experimental Acoustic Ground Cloak in Air (2011)

Bogdan-Ioan Popa, Lucian Zigoneanu, and Steven A. Cummer

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): Bogdan-Ioan Popa, Lucian Zigoneanu, and Steven A. Cummer We present the design, fabrication, and performance analysis for a class of two-dimensional acoustic cloaking coatings in air. Our approach takes advantage of transformation acoustics and linear coordinate transformations that result in shells which are homogeneous, broadband, and compact. The requi... [Phys. Rev. Lett. 106, 253901] Published Wed Jun 22, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Publisher’s Note: Label-Free Bond-Selective Imaging by Listening to Vibrationally Excited Molecules [Phys. Rev. Lett. 106, 238106 (2011)] (2011)

Han-Wei Wang, Ning Chai, Pu Wang, Song Hu, Wei Dou, David Umulis, Lihong V. Wang, Michael Sturek, Robert Lucht, and Ji-Xin Cheng

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): Han-Wei Wang, Ning Chai, Pu Wang, Song Hu, Wei Dou, David Umulis, Lihong V. Wang, Michael Sturek, Robert Lucht, and Ji-Xin Cheng [Phys. Rev. Lett. 106, 259901] Published Wed Jun 22, 2011

Schlagwort(e): Errata

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Entanglement Symmetry, Amplitudes, and Probabilities: Inverting Born’s Rule (2011)

Wojciech H. Zurek

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): Wojciech H. Zurek Symmetry of entangled states under a swap of outcomes (“envariance”) implies their equiprobability and leads to Born’s rule p k =| ψ k | 2 . Here I show the converse: I demonstrate that the amplitude of a state given by a superposition of sequences of events that share the same total count (e.g., n detecti... [Phys. Rev. Lett. 106, 250402] Published Wed Jun 22, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Flavor Decomposition of the Elastic Nucleon Electromagnetic Form Factors (2011)

G. D. Cates, C. W. de Jager, S. Riordan, and B. Wojtsekhowski

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): G. D. Cates, C. W. de Jager, S. Riordan, and B. Wojtsekhowski The u - and d -quark contributions to the elastic nucleon electromagnetic form factors have been determined by using experimental data on G E n , G M n , G E p , and G M p . Such a flavor separation of the form factors became possible up to negative four-momentum transfer squared Q 2 =3.4 GeV 2 with recent data on ... [Phys. Rev. Lett. 106, 252003] Published Wed Jun 22, 2011

Schlagwort(e): Elementary Particles and Fields

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Search for Light Gauge Bosons of the Dark Sector at the Mainz Microtron (2011)

H. Merkel, P. Achenbach, C. Ayerbe Gayoso, J. C. Bernauer, R. Böhm, D. Bosnar, L. Debenjak, A. Denig, M. O. Distler, A. Esser, H. Fonvieille, I. Friščić, D. G. Middleton, U. Müller, L. Nungesser, J. Pochodzalla, M. Rohrbeck, S. Sánchez Majos, B. S. Schlimme, M. Schoth, S. Širca, and M. Weinriefer (A1 Collaboration)

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): H. Merkel, P. Achenbach, C. Ayerbe Gayoso, J. C. Bernauer, R. Böhm, D. Bosnar, L. Debenjak, A. Denig, M. O. Distler, A. Esser, H. Fonvieille, I. Friščić, D. G. Middleton, U. Müller, L. Nungesser, J. Pochodzalla, M. Rohrbeck, S. Sánchez Majos, B. S. Schlimme, M. Schoth, S. Širca, and M. Weinriefer (A1 Collaboration) A new exclusion limit for the electromagnetic production of a light U (1) gauge boson γ ′ decaying to e + e - was determined by the A1 Collaboration at the Mainz Microtron. Such light gauge bosons appear in several extensions of the standard model and are also discussed as candidates for the interaction ... [Phys. Rev. Lett. 106, 251802] Published Wed Jun 22, 2011

Schlagwort(e): Elementary Particles and Fields

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Measurement and Control of Plasma Oscillations in Femtosecond Filaments (2011)

B. Zhou, A. Houard, Y. Liu, B. Prade, A. Mysyrowicz, A. Couairon, P. Mora, C. Smeenk, L. Arissian, and P. Corkum

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): B. Zhou, A. Houard, Y. Liu, B. Prade, A. Mysyrowicz, A. Couairon, P. Mora, C. Smeenk, L. Arissian, and P. Corkum The short-lived longitudinal plasma oscillations generated during filamentation in argon and nitrogen gas are measured with a specially designed current monitor. The magnitude and initial direction of the corresponding currents depend sensitively on laser polarization and nature of the gas. The resu... [Phys. Rev. Lett. 106, 255002] Published Wed Jun 22, 2011

Schlagwort(e): Plasma and Beam Physics

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Search for a Heavy Particle Decaying into an Electron and a Muon with the ATLAS Detector in sqrt[s]=7 TeV pp collisions at the LHC (2011)

G. Aad et al. (ATLAS Collaboration)

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): G. Aad et al. (ATLAS Collaboration) This Letter presents the first search for a heavy particle decaying into an e ± μ ∓ final state in √ s =7 TeV p p collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35 pb -1 . No excess above the standard model background expe... [Phys. Rev. Lett. 106, 251801] Published Wed Jun 22, 2011

Schlagwort(e): Elementary Particles and Fields

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Theory of Programmable Hierarchic Self-Assembly (2011)

Alexei V. Tkachenko

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): Alexei V. Tkachenko We present a theoretical analysis of the inverse problem in self-assembly. A particular scheme is proposed for building an arbitrary desired nanostructure out of self-assembled building blocks (“octopus” nanoparticles). The conditions for robust self-assembly of the target structure are identified. ... [Phys. Rev. Lett. 106, 255501] Published Wed Jun 22, 2011

Schlagwort(e): Condensed Matter: Structure, etc.

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Electronic Structure of the Topological Insulator Bi_{2}Se_{3} Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization (2011)

Z.-H. Pan, E. Vescovo, A. V. Fedorov, D. Gardner, Y. S. Lee, S. Chu, G. D. Gu, and T. Valla

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): Z.-H. Pan, E. Vescovo, A. V. Fedorov, D. Gardner, Y. S. Lee, S. Chu, G. D. Gu, and T. Valla We performed high-resolution spin- and angle-resolved photoemission spectroscopy studies of the electronic structure and the spin texture on the surface of Bi 2 Se 3 , a model TI. By tuning the photon energy, we found that the topological surface state is well separated from the bulk states in the vicin... [Phys. Rev. Lett. 106, 257004] Published Wed Jun 22, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Sliding over a Phase Transition (2011)

A. Benassi, A. Vanossi, G. E. Santoro, and E. Tosatti

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): A. Benassi, A. Vanossi, G. E. Santoro, and E. Tosatti The effects of a displacive structural phase transition on sliding friction are in principle accessible to nanoscale tools such as atomic force microscopy, yet they are still surprisingly unexplored. We present model simulations demonstrating and clarifying the mechanism and potential impact of thes... [Phys. Rev. Lett. 106, 256102] Published Wed Jun 22, 2011

Schlagwort(e): Condensed Matter: Structure, etc.

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Localization Properties of Random-Mass Dirac Fermions from Real-Space Renormalization Group (2011)

V. V. Mkhitaryan and M. E. Raikh

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): V. V. Mkhitaryan and M. E. Raikh Localization properties of random-mass Dirac fermions for a realization of mass disorder, commonly referred to as the Cho-Fisher model, are studied on the D -class chiral network. We show that a simple renormalization group (RG) description captures accurately a rich phase diagram: thermal metal and ... [Phys. Rev. Lett. 106, 256803] Published Wed Jun 22, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Cheng, Yu, and Harko Reply: (2011)

K. S. Cheng, Y. W. Yu, and T. Harko

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-23

Beschreibung: Author(s): K. S. Cheng, Y. W. Yu, and T. Harko A Reply to the Comment by Yu Wang, Yi-Zhong Fan, and Da-Ming Wei. [Phys. Rev. Lett. 106, 259002] Published Wed Jun 22, 2011

Schlagwort(e): Comments

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Gravitational Waves from the Papaloizou-Pringle Instability in Black-Hole-Torus Systems (2011)

Kenta Kiuchi, Masaru Shibata, Pedro J. Montero, and José A. Font

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-24

Beschreibung: Author(s): Kenta Kiuchi, Masaru Shibata, Pedro J. Montero, and José A. Font Black hole (BH)-torus systems are promising candidates for the central engine of γ -ray bursts (GRBs), and also possible outcomes of the collapse of supermassive stars to supermassive black holes (SMBHs). By three-dimensional general relativistic numerical simulations, we show that an m =1 nonaxisymme... [Phys. Rev. Lett. 106, 251102] Published Thu Jun 23, 2011

Schlagwort(e): Gravitation and Astrophysics

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Device-Independent Witnesses of Genuine Multipartite Entanglement (2011)

Jean-Daniel Bancal, Nicolas Gisin, Yeong-Cherng Liang, and Stefano Pironio

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Jean-Daniel Bancal, Nicolas Gisin, Yeong-Cherng Liang, and Stefano Pironio We consider the problem of determining whether genuine multipartite entanglement was produced in an experiment, without relying on a characterization of the systems observed or of the measurements performed. We present an n -partite inequality that is satisfied by all correlations produced by measure... [Phys. Rev. Lett. 106, 250404] Published Fri Jun 24, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Asymptotically Safe Lorentzian Gravity (2011)

Elisa Manrique, Stefan Rechenberger, and Frank Saueressig

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Elisa Manrique, Stefan Rechenberger, and Frank Saueressig The gravitational asymptotic safety program strives for a consistent and predictive quantum theory of gravity based on a nontrivial ultraviolet fixed point of the renormalization group (RG) flow. We investigate this scenario by employing a novel functional renormalization group equation which takes ... [Phys. Rev. Lett. 106, 251302] Published Fri Jun 24, 2011

Schlagwort(e): Gravitation and Astrophysics

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Ground-State Proton Decay of ^{69}Br and Implications for the ^{68}Se Astrophysical Rapid Proton-Capture Process Waiting Point (2011)

A. M. Rogers, M. A. Famiano, W. G. Lynch, M. S. Wallace, F. Amorini, D. Bazin, R. J. Charity, F. Delaunay, R. T. de Souza, J. Elson, A. Gade, D. Galaviz, M.-J. van Goethem, S. Hudan, J. Lee, S. Lobastov, S. Lukyanov, M. Matoš, M. Mocko, H. Schatz, D. Shapira, L. G. Sobotka, M. B. Tsang, and G. Verde

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): A. M. Rogers, M. A. Famiano, W. G. Lynch, M. S. Wallace, F. Amorini, D. Bazin, R. J. Charity, F. Delaunay, R. T. de Souza, J. Elson, A. Gade, D. Galaviz, M.-J. van Goethem, S. Hudan, J. Lee, S. Lobastov, S. Lukyanov, M. Matoš, M. Mocko, H. Schatz, D. Shapira, L. G. Sobotka, M. B. Tsang, and G. Verde We report on the first direct measurement of the proton separation energy for the proton-unbound nucleus 69 Br . Bypassing the 68 Se waiting point in the rp process is directly related to the 2 p -capture rate through 69 Br , which depends exponentially on the proton separation energy. We find a proton sep... [Phys. Rev. Lett. 106, 252503] Published Fri Jun 24, 2011

Schlagwort(e): Nuclear Physics

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Measurement of Linear Stark Interference in ^{199}Hg (2011)

T. H. Loftus, M. D. Swallows, W. C. Griffith, M. V. Romalis, B. R. Heckel, and E. N. Fortson

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): T. H. Loftus, M. D. Swallows, W. C. Griffith, M. V. Romalis, B. R. Heckel, and E. N. Fortson We present measurements of Stark interference in the 6 1 S 0 →6 3 P 1 transition in 199 Hg , a process whereby a static electric field E mixes magnetic dipole and electric quadrupole couplings into an electric dipole transition, leading to E -linear energy shifts similar to those produced by a permanent atomi... [Phys. Rev. Lett. 106, 253002] Published Fri Jun 24, 2011

Schlagwort(e): Atomic, Molecular, and Optical Physics

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Interacting Fermionic Atoms in Optical Lattices Diffuse Symmetrically Upwards and Downwards in a Gravitational Potential (2011)

Stephan Mandt, Akos Rapp, and Achim Rosch

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Stephan Mandt, Akos Rapp, and Achim Rosch We consider a cloud of fermionic atoms in an optical lattice described by a Hubbard model with an additional linear potential. While homogeneous interacting systems mainly show damped Bloch oscillations and heating, a finite cloud behaves differently: It expands symmetrically such that gains of pote... [Phys. Rev. Lett. 106, 250602] Published Fri Jun 24, 2011

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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Hydrodynamic Description of Transport in Strongly Correlated Electron Systems (2011)

A. V. Andreev, Steven A. Kivelson, and B. Spivak

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): A. V. Andreev, Steven A. Kivelson, and B. Spivak We develop a hydrodynamic description of the resistivity and magnetoresistance of an electron liquid in a smooth disorder potential. This approach is valid when the electron-electron scattering length is sufficiently short. In a broad range of temperatures, the dissipation is dominated by heat fluxe... [Phys. Rev. Lett. 106, 256804] Published Fri Jun 24, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Thema: Physik

Publiziert von American Physical Society (APS)

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Nondeterminism in the Limit of Nonsmooth Dynamics (2011)

Mike R. Jeffrey

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Mike R. Jeffrey Discontinuous time derivatives are used to model threshold-dependent switching in such diverse applications as dry friction, electronic control, and biological growth. In a continuous flow, a discontinuous derivative can generate multiple outcomes from a single initial state. Here we show that well-... [Phys. Rev. Lett. 106, 254103] Published Fri Jun 24, 2011

Schlagwort(e): Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

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Thema: Physik

Publiziert von American Physical Society (APS)

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Production of Nonlocal Quartets and Phase-Sensitive Entanglement in a Superconducting Beam Splitter (2011)

Axel Freyn, Benoit Douçot, Denis Feinberg, and Régis Mélin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Axel Freyn, Benoit Douçot, Denis Feinberg, and Régis Mélin Three BCS superconductors S a , S b , and S and two short normal regions N a and N b in a three-terminal S a N a S N b S b setup provide a source of nonlocal quartets spatially separated as two correlated pairs in S a and S b , if the distance between the interfaces N a S and S N b is comparable to the coherence length ... [Phys. Rev. Lett. 106, 257005] Published Fri Jun 24, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Thema: Physik

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Bending Ultrathin Graphene at the Margins of Continuum Mechanics (2011)

D.-B. Zhang, E. Akatyeva, and T. Dumitrică

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): D.-B. Zhang, E. Akatyeva, and T. Dumitrică Deviations from continuum mechanics are always expected in nanoscale structures. We investigate the validity of the plate idealization of ultrathin graphene by gaining insight into the response of chemical bonds to bending deformations. In the monolayer, a bond orbital model reveals the breakdown of... [Phys. Rev. Lett. 106, 255503] Published Fri Jun 24, 2011

Schlagwort(e): Condensed Matter: Structure, etc.

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Thema: Physik

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