Volume 115, Issue 18

30 October 2015

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On the Cover

Simulation snapshots showing the distribution of active particles confined in two connected chambers. The arrows indicate flow currents generated spontaneously by the moving particles.

From the article:

Self-Sustained Density Oscillations of Swimming Bacteria Confined in Microchambers
M. Paoluzzi, R. Di Leonardo, and L. Angelani
Phys. Rev. Lett. 115, 188303 (2015)

HIGHLIGHTED ARTICLES

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Popping Balloons: A Case Study of Dynamical Fragmentation

Sébastien Moulinet and Mokhtar Adda-Bedia

Phys. Rev. Lett. 115, 184301 (2015) - Published 30 October, 2015

A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks.

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Superradiant Emission from a Collective Excitation in a Semiconductor

T. Laurent, Y. Todorov, A. Vasanelli, A. Delteil, C. Sirtori, I. Sagnes, and G. Beaudoin

Phys. Rev. Lett. 115, 187402 (2015) - Published 29 October, 2015

A “Schrödinger’s cat”-type effect entangles collective excitations in a semiconductor nanostructure, making a new infrared light source.

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Hydraulic Fracture and Toughening of a Brittle Layer Bonded to a Hydrogel

Alessandro Lucantonio, Giovanni Noselli, Xavier Trepat, Antonio DeSimone, and Marino Arroyo

Phys. Rev. Lett. 115, 188105 (2015) - Published 28 October, 2015

A combination of brittle and porous materials fractures under opposite conditions to conventional brittle materials.

EDITORS' SUGGESTION

Quantum Phase Transition and Universal Dynamics in the Rabi Model

Myung-Joong Hwang, Ricardo Puebla, and Martin B. Plenio

Phys. Rev. Lett. 115, 180404 (2015) - Published 29 October, 2015

A two-level atom coupled to a single-mode cavity field is shown to undergo a second order quantum phase transition when the atomic transition frequency is much larger than the cavity frequency.

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Approaching Tsirelson’s Bound in a Photon Pair Experiment

Hou Shun Poh, Siddarth K. Joshi, Alessandro Cerè, Adán Cabello, and Christian Kurtsiefer

Phys. Rev. Lett. 115, 180408 (2015) - Published 30 October, 2015

Measurements of the correlation between pairs of photons provide the tightest test of local realism to date, with an order of magnitude reduction in the uncertainty compared with previous experiments.

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Gravitational Waves from a Dark Phase Transition

Pedro Schwaller

Phys. Rev. Lett. 115, 181101 (2015) - Published 26 October, 2015

A first order phase transition in the early Universe is shown to be generic to a large class of composite dark matter models. This phase transition may result in detectable gravitational wave signals.

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Signatures of a Two Million Year Old Supernova in the Spectra of Cosmic Ray Protons, Antiprotons, and Positrons

M. Kachelrieß, A. Neronov, and D. V. Semikoz

Phys. Rev. Lett. 115, 181103 (2015) - Published 29 October, 2015

Several puzzling features in cosmic ray spectra might be explained by a nearby supernova two million years ago. The same explosion may be the source of iron isotopes on Earth.

EDITORS' SUGGESTION

Widely Tunable Two-Color Free-Electron Laser on a Storage Ring

Y. K. Wu, J. Yan, H. Hao, J. Y. Li, S. F. Mikhailov, V. G. Popov, N. A. Vinokurov, S. Huang, and J. Wu

Phys. Rev. Lett. 115, 184801 (2015) - Published 26 October, 2015

A two color free electron laser with simultaneous infrared and ultraviolet lasing is demonstrated using the electron storage ring at Duke University.

EDITORS' SUGGESTION

Nonclassical Nucleation in a Solid-Solid Transition of Confined Hard Spheres

Weikai Qi, Yi Peng, Yilong Han, Richard K. Bowles, and Marjolein Dijkstra

Phys. Rev. Lett. 115, 185701 (2015) - Published 29 October, 2015

Molecular dynamics simulations suggests that a solid-solid phase transition in a system of hard spheres takes place via an intermediate liquid stage. The solid ‘melts’ forming a liquid droplet, within which the new stable solid phase nucleates and begins to grow.

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Enhanced Magneto-Optical Edge Excitation in Nanoscale Magnetic Disks

A. Berger, R. Alcaraz de la Osa, A. K. Suszka, M. Pancaldi, J. M. Saiz, F. Moreno, H. P. Oepen, and P. Vavassori

Phys. Rev. Lett. 115, 187403 (2015) - Published 30 October, 2015

Ferromagnetic nanodiscs can exhibit an enhancement, of more than 100%, in their magneto-optical activity. This effect could be used in nano-optical devices for communications, energy harvesting, and biosensors.

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Cell Chirality Induces Collective Cell Migration in Epithelial Sheets

Katsuhiko Sato, Tetsuya Hiraiwa, and Tatsuo Shibata

Phys. Rev. Lett. 115, 188102 (2015) - Published 27 October, 2015

A model of cell migration shows how cell chirality can lead to unidirectional motion of a group of cells.

LETTERS

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Localization of Interacting Fermions in the Aubry-André Model

Vieri Mastropietro

Phys. Rev. Lett. 115, 180401 (2015) - Published 26 October, 2015

Dynamics of Spin-Orbit Coupled Bose-Einstein Condensates in a Random Potential

Sh. Mardonov, M. Modugno, and E. Ya. Sherman

Phys. Rev. Lett. 115, 180402 (2015) - Published 26 October, 2015

Propagation Dynamics of a Light Beam in a Fractional Schrödinger Equation

Yiqi Zhang (张贻齐), Xing Liu (刘星), Milivoj R. Belić, Weiping Zhong (钟卫平), Yanpeng Zhang (张彦鹏), and Min Xiao (肖敏)

Phys. Rev. Lett. 115, 180403 (2015) - Published 27 October, 2015

EDITORS' SUGGESTION

Quantum Phase Transition and Universal Dynamics in the Rabi Model

Myung-Joong Hwang, Ricardo Puebla, and Martin B. Plenio

Phys. Rev. Lett. 115, 180404 (2015) - Published 29 October, 2015

A two-level atom coupled to a single-mode cavity field is shown to undergo a second order quantum phase transition when the atomic transition frequency is much larger than the cavity frequency.

Tensor Network Renormalization

G. Evenbly and G. Vidal

Phys. Rev. Lett. 115, 180405 (2015) - Published 29 October, 2015

Generalized Efimov Effect in One Dimension

Sergej Moroz, José P. D’Incao, and Dmitry S. Petrov

Phys. Rev. Lett. 115, 180406 (2015) - Published 29 October, 2015

Quantum State Smoothing

Ivonne Guevara and Howard Wiseman

Phys. Rev. Lett. 115, 180407 (2015) - Published 30 October, 2015

EDITORS' SUGGESTION

Approaching Tsirelson’s Bound in a Photon Pair Experiment

Hou Shun Poh, Siddarth K. Joshi, Alessandro Cerè, Adán Cabello, and Christian Kurtsiefer

Phys. Rev. Lett. 115, 180408 (2015) - Published 30 October, 2015

Single-Photon-Resolved Cross-Kerr Interaction for Autonomous Stabilization of Photon-Number States

E. T. Holland, B. Vlastakis, R. W. Heeres, M. J. Reagor, U. Vool, Z. Leghtas, L. Frunzio, G. Kirchmair, M. H. Devoret, M. Mirrahimi, and R. J. Schoelkopf

Phys. Rev. Lett. 115, 180501 (2015) - Published 26 October, 2015

Secure Continuous Variable Teleportation and Einstein-Podolsky-Rosen Steering

Qiongyi He, Laura Rosales-Zárate, Gerardo Adesso, and Margaret D. Reid

Phys. Rev. Lett. 115, 180502 (2015) - Published 27 October, 2015

Prethermalization and Thermalization in Models with Weak Integrability Breaking

Bruno Bertini, Fabian H. L. Essler, Stefan Groha, and Neil J. Robinson

Phys. Rev. Lett. 115, 180601 (2015) - Published 29 October, 2015

Gravitation and Astrophysics

EDITORS' SUGGESTION

Gravitational Waves from a Dark Phase Transition

Pedro Schwaller

Phys. Rev. Lett. 115, 181101 (2015) - Published 26 October, 2015

Detecting Gravitational-Wave Transients at $5 σ$ : A Hierarchical Approach

Eric Thrane and Michael Coughlin

Phys. Rev. Lett. 115, 181102 (2015) - Published 27 October, 2015

EDITORS' SUGGESTION

Signatures of a Two Million Year Old Supernova in the Spectra of Cosmic Ray Protons, Antiprotons, and Positrons

M. Kachelrieß, A. Neronov, and D. V. Semikoz

Phys. Rev. Lett. 115, 181103 (2015) - Published 29 October, 2015

Several puzzling features in cosmic ray spectra might be explained by a nearby supernova two million years ago. The same explosion may be the source of iron isotopes on Earth.

Brans-Dicke Theory with $Λ > 0$ : Black Holes and Large Scale Structures

Sourav Bhattacharya, Konstantinos F. Dialektopoulos, Antonio Enea Romano, and Theodore N. Tomaras

Phys. Rev. Lett. 115, 181104 (2015) - Published 29 October, 2015

Elementary Particles and Fields

Widening the Axion Window via Kinetic and Stückelberg Mixings

Gary Shiu, Wieland Staessens, and Fang Ye

Phys. Rev. Lett. 115, 181601 (2015) - Published 27 October, 2015

Opening Up the Compressed Region of Top Squark Searches at 13 TeV LHC

Haipeng An and Lian-Tao Wang

Phys. Rev. Lett. 115, 181602 (2015) - Published 29 October, 2015

Effective Field Theory Approach to $b \to s ℓ ℓ^{(')}$ , $B \to K^{()} ν \bar{ν}$ and $B \to D^{()} τ ν$ with Third Generation Couplings

Lorenzo Calibbi, Andreas Crivellin, and Toshihiko Ota

Phys. Rev. Lett. 115, 181801 (2015) - Published 27 October, 2015

Constraining Dark Matter Interactions with Pseudoscalar and Scalar Mediators Using Collider Searches for Multijets plus Missing Transverse Energy

Oliver Buchmueller, Sarah A. Malik, Christopher McCabe, and Bjoern Penning

Phys. Rev. Lett. 115, 181802 (2015) - Published 29 October, 2015

Unified Explanation of the $e e j j$ , Diboson, and Dijet Resonances at the LHC

P. S. Bhupal Dev and R. N. Mohapatra

Phys. Rev. Lett. 115, 181803 (2015) - Published 30 October, 2015

Searching for New Spin- and Velocity-Dependent Interactions by Spin Relaxation of Polarized ${}^{3}{He}$ Gas

H. Yan, G. A. Sun, S. M. Peng, Y. Zhang, C. Fu, H. Guo, and B. Q. Liu

Phys. Rev. Lett. 115, 182001 (2015) - Published 26 October, 2015

Observation of a Neutral Charmoniumlike State $Z_{c} (4025)^{0}$ in $e^{+} e^{-} \to (D^{} {\bar{D}}^{})^{0} π^{0}$

M. Ablikim et al. (BESIII Collaboration)

Phys. Rev. Lett. 115, 182002 (2015) - Published 29 October, 2015

Nuclear Physics

Isotropization and Hydrodynamization in Weakly Coupled Heavy-Ion Collisions

Aleksi Kurkela and Yan Zhu

Phys. Rev. Lett. 115, 182301 (2015) - Published 27 October, 2015

Limit on Tensor Currents from ${}^{8}{Li}$ $β$ Decay

M. G. Sternberg, R. Segel, N. D. Scielzo, G. Savard, J. A. Clark, P. F. Bertone, F. Buchinger, M. Burkey, S. Caldwell, A. Chaudhuri, J. E. Crawford, C. M. Deibel, J. Greene, S. Gulick, D. Lascar, A. F. Levand, G. Li, A. Pérez Galván, K. S. Sharma, J. Van Schelt, R. M. Yee, and B. J. Zabransky

Phys. Rev. Lett. 115, 182501 (2015) - Published 28 October, 2015

Atomic, Molecular, and Optical Physics

Measurement of the Spin-Dipolar Part of the Tensor Polarizability of ${}^{87}{Rb}$

Yehonatan Dallal and Roee Ozeri

Phys. Rev. Lett. 115, 183001 (2015) - Published 27 October, 2015

Criterion for Distinguishing Sequential from Nonsequential Contributions to the Double Ionization of Helium in Ultrashort Extreme-Ultraviolet Pulses

Aihua Liu and Uwe Thumm

Phys. Rev. Lett. 115, 183002 (2015) - Published 28 October, 2015

Controlling Positronium Annihilation with Electric Fields

A. M. Alonso, B. S. Cooper, A. Deller, S. D. Hogan, and D. B. Cassidy

Phys. Rev. Lett. 115, 183401 (2015) - Published 27 October, 2015

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

What is the Temporal Analog of Reflection and Refraction of Optical Beams?

B. W. Plansinis, W. R. Donaldson, and G. P. Agrawal

Phys. Rev. Lett. 115, 183901 (2015) - Published 28 October, 2015

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Popping Balloons: A Case Study of Dynamical Fragmentation

Sébastien Moulinet and Mokhtar Adda-Bedia

Phys. Rev. Lett. 115, 184301 (2015) - Published 30 October, 2015

A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks.

Continuous Growth of Droplet Size Variance due to Condensation in Turbulent Clouds

Gaetano Sardina, Francesco Picano, Luca Brandt, and Rodrigo Caballero

Phys. Rev. Lett. 115, 184501 (2015) - Published 29 October, 2015

Plasma and Beam Physics

EDITORS' SUGGESTION

Widely Tunable Two-Color Free-Electron Laser on a Storage Ring

Y. K. Wu, J. Yan, H. Hao, J. Y. Li, S. F. Mikhailov, V. G. Popov, N. A. Vinokurov, S. Huang, and J. Wu

Phys. Rev. Lett. 115, 184801 (2015) - Published 26 October, 2015

A two color free electron laser with simultaneous infrared and ultraviolet lasing is demonstrated using the electron storage ring at Duke University.

Active Plasma Lensing for Relativistic Laser-Plasma-Accelerated Electron Beams

J. van Tilborg, S. Steinke, C. G. R. Geddes, N. H. Matlis, B. H. Shaw, A. J. Gonsalves, J. V. Huijts, K. Nakamura, J. Daniels, C. B. Schroeder, C. Benedetti, E. Esarey, S. S. Bulanov, N. A. Bobrova, P. V. Sasorov, and W. P. Leemans

Phys. Rev. Lett. 115, 184802 (2015) - Published 28 October, 2015

Condensed Matter: Structure, etc.

Ab initio Lattice Results for Fermi Polarons in Two Dimensions

Shahin Bour, Dean Lee, H.-W. Hammer, and Ulf-G. Meißner

Phys. Rev. Lett. 115, 185301 (2015) - Published 27 October, 2015

Suppression of $β$ Relaxation in Vapor-Deposited Ultrastable Glasses

H. B. Yu, M. Tylinski, A. Guiseppi-Elie, M. D. Ediger, and R. Richert

Phys. Rev. Lett. 115, 185501 (2015) - Published 26 October, 2015

Anomalous Stress Response of Ultrahard ${WB}_{n}$ Compounds

Quan Li, Dan Zhou, Weitao Zheng, Yanming Ma, and Changfeng Chen

Phys. Rev. Lett. 115, 185502 (2015) - Published 29 October, 2015

EDITORS' SUGGESTION

Nonclassical Nucleation in a Solid-Solid Transition of Confined Hard Spheres

Weikai Qi, Yi Peng, Yilong Han, Richard K. Bowles, and Marjolein Dijkstra

Phys. Rev. Lett. 115, 185701 (2015) - Published 29 October, 2015

Water-COOH Composite Structure with Enhanced Hydrophobicity Formed by Water Molecules Embedded into Carboxyl-Terminated Self-Assembled Monolayers

Pan Guo, Yusong Tu, Jinrong Yang, Chunlei Wang, Nan Sheng, and Haiping Fang

Phys. Rev. Lett. 115, 186101 (2015) - Published 28 October, 2015

Phonons in Ultrathin Oxide Films: 2D to 3D Transition in FeO on Pt(111)

N. Spiridis, M. Zając, P. Piekarz, A. I. Chumakov, K. Freindl, J. Goniakowski, A. Kozioł-Rachwał, K. Parliński, M. Ślęzak, T. Ślęzak, U. D. Wdowik, D. Wilgocka-Ślęzak, and J. Korecki

Phys. Rev. Lett. 115, 186102 (2015) - Published 29 October, 2015

Condensed Matter: Electronic Properties, etc.

Ghost Branch Photoluminescence From a Polariton Fluid Under Nonresonant Excitation

Maciej Pieczarka, Marcin Syperek, Łukasz Dusanowski, Jan Misiewicz, Fabian Langer, Alfred Forchel, Martin Kamp, Christian Schneider, Sven Höfling, Alexey Kavokin, and Grzegorz Sęk

Phys. Rev. Lett. 115, 186401 (2015) - Published 26 October, 2015

Detuning-Controlled Internal Oscillations in an Exciton-Polariton Condensate

N. S. Voronova, A. A. Elistratov, and Yu. E. Lozovik

Phys. Rev. Lett. 115, 186402 (2015) - Published 27 October, 2015

Pressure-Induced Electronic Transition in Black Phosphorus

Z. J. Xiang, G. J. Ye, C. Shang, B. Lei, N. Z. Wang, K. S. Yang, D. Y. Liu, F. B. Meng, X. G. Luo, L. J. Zou, Z. Sun, Y. Zhang, and X. H. Chen

Phys. Rev. Lett. 115, 186403 (2015) - Published 28 October, 2015

Helical Quantum Edge Gears in 2D Topological Insulators

Yang-Zhi Chou, Alex Levchenko, and Matthew S. Foster

Phys. Rev. Lett. 115, 186404 (2015) - Published 29 October, 2015

Quantum Criticality in Quasi-Two-Dimensional Itinerant Antiferromagnets

C. M. Varma

Phys. Rev. Lett. 115, 186405 (2015) - Published 30 October, 2015

Many-Body Localization and Quantum Nonergodicity in a Model with a Single-Particle Mobility Edge

Xiaopeng Li, Sriram Ganeshan, J. H. Pixley, and S. Das Sarma

Phys. Rev. Lett. 115, 186601 (2015) - Published 28 October, 2015

Interaction-Driven Metal-Insulator Transition in Strained Graphene

Ho-Kin Tang, E. Laksono, J. N. B. Rodrigues, P. Sengupta, F. F. Assaad, and S. Adam

Phys. Rev. Lett. 115, 186602 (2015) - Published 30 October, 2015

Effect of Structural Relaxation on the Electronic Structure of Graphene on Hexagonal Boron Nitride

G. J. Slotman, M. M. van Wijk, Pei-Liang Zhao, A. Fasolino, M. I. Katsnelson, and Shengjun Yuan

Phys. Rev. Lett. 115, 186801 (2015) - Published 26 October, 2015

Intrinsic Quantum Anomalous Hall Effect in the Kagome Lattice ${Cs}_{2} {LiMn}_{3} F_{12}$

Gang Xu, Biao Lian, and Shou-Cheng Zhang

Phys. Rev. Lett. 115, 186802 (2015) - Published 27 October, 2015

Critical Behavior of Alternately Pumped Nuclear Spins in Quantum Dots

Y. Kondo, S. Amaha, K. Ono, K. Kono, and S. Tarucha

Phys. Rev. Lett. 115, 186803 (2015) - Published 27 October, 2015

Analyzing Longitudinal Magnetoresistance Asymmetry to Quantify Doping Gradients: Generalization of the van der Pauw Method

Wang Zhou, H. M. Yoo, S. Prabhu-Gaunkar, L. Tiemann, C. Reichl, W. Wegscheider, and M. Grayson

Phys. Rev. Lett. 115, 186804 (2015) - Published 28 October, 2015

Luttinger Theorem for the Strongly Correlated Fermi Liquid of Composite Fermions

Ajit C. Balram, Csaba Tőke, and J. K. Jain

Phys. Rev. Lett. 115, 186805 (2015) - Published 29 October, 2015

Topological Superconductivity in Dirac Semimetals

Shingo Kobayashi and Masatoshi Sato

Phys. Rev. Lett. 115, 187001 (2015) - Published 29 October, 2015

Anomalous Light Cones and Valley Optical Selection Rules of Interlayer Excitons in Twisted Heterobilayers

Hongyi Yu, Yong Wang, Qingjun Tong, Xiaodong Xu, and Wang Yao

Phys. Rev. Lett. 115, 187002 (2015) - Published 30 October, 2015

Early Breakdown of Area-Law Entanglement at the Many-Body Delocalization Transition

Trithep Devakul and Rajiv R. P. Singh

Phys. Rev. Lett. 115, 187201 (2015) - Published 28 October, 2015

Thermodynamic Identities and Symmetry Breaking in Short-Range Spin Glasses

L.-P. Arguin, C. M. Newman, and D. L. Stein

Phys. Rev. Lett. 115, 187202 (2015) - Published 29 October, 2015

THz-Frequency Modulation of the Hubbard $U$ in an Organic Mott Insulator

R. Singla, G. Cotugno, S. Kaiser, M. Först, M. Mitrano, H. Y. Liu, A. Cartella, C. Manzoni, H. Okamoto, T. Hasegawa, S. R. Clark, D. Jaksch, and A. Cavalleri

Phys. Rev. Lett. 115, 187401 (2015) - Published 29 October, 2015

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