Volume 116, Issue 4

29 January 2016

Browse Issues:

On the Cover

Groups of confined microswimmers in rectangular microchannels exhibiting density shock waves. Blue arrows show the direction of the velocity of the medium. Back (top image), suppressed (middle), and forward (bottom) shocks are formed, dependent on the velocity of the medium and on the swimmers’ motility properties.

From the article:

Density Shock Waves in Confined Microswimmers
Alan Cheng Hou Tsang and Eva Kanso
Phys. Rev. Lett. 116, 048101 (2016)

HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Evidence of Halo Assembly Bias in Massive Clusters

Hironao Miyatake, Surhud More, Masahiro Takada, David N. Spergel, Rachel Mandelbaum, Eli S. Rykoff, and Eduardo Rozo

Phys. Rev. Lett. 116, 041301 (2016) - Published 25 January, 2016

The clumping of galaxies and galaxy clusters has a subtle dependence on their assembly history—a predicted effect that has now been detected.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Dark Matter Halos as Particle Colliders: Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters

Manoj Kaplinghat, Sean Tulin, and Hai-Bo Yu

Phys. Rev. Lett. 116, 041302 (2016) - Published 28 January, 2016

A new model has allowed researchers to test a theory for why the centers of dark matter halos are less dense than expected.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

On-Shell Recursion Relations for Effective Field Theories

Clifford Cheung, Karol Kampf, Jiri Novotny, Chia-Hsien Shen, and Jaroslav Trnka

Phys. Rev. Lett. 116, 041601 (2016) - Published 25 January, 2016

A modern technique for computing scattering amplitudes—the key ingredients for predicting what particle physics experiments will observe—has now been extended to cover effective quantum field theories.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Mechanically Mediated Microwave Frequency Conversion in the Quantum Regime

F. Lecocq, J. B. Clark, R. W. Simmonds, J. Aumentado, and J. D. Teufel

Phys. Rev. Lett. 116, 043601 (2016) - Published 26 January, 2016

A new device converts the frequency of a photon using the vibrations in a mechanical oscillator.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Thermodynamics of an Attractive 2D Fermi Gas

K. Fenech, P. Dyke, T. Peppler, M. G. Lingham, S. Hoinka, H. Hu, and C. J. Vale

Phys. Rev. Lett. 116, 045302 (2016) - Published 27 January, 2016

Two separate groups have extracted the thermodynamic equation of state for a two-dimensional gas of fermionic atoms, revealing its peculiar quantum features.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Equation of State of Ultracold Fermions in the 2D BEC-BCS Crossover Region

I. Boettcher, L. Bayha, D. Kedar, P. A. Murthy, M. Neidig, M. G. Ries, A. N. Wenz, G. Zürn, S. Jochim, and T. Enss

Phys. Rev. Lett. 116, 045303 (2016) - Published 27 January, 2016

Two separate groups have extracted the thermodynamic equation of state for a two-dimensional gas of fermionic atoms, revealing its peculiar quantum features.

EDITORS' SUGGESTION

Permutation Symmetry Determines the Discrete Wigner Function

Huangjun Zhu

Phys. Rev. Lett. 116, 040501 (2016) - Published 26 January, 2016

Underlying symmetries can be used to elucidate the structure and properties of the discrete version of the Wigner quasi-probability distribution function in phase space.

EDITORS' SUGGESTION

Electron Elevator: Excitations across the Band Gap via a Dynamical Gap State

A. Lim, W. M. C. Foulkes, A. P. Horsfield, D. R. Mason, A. Schleife, E. W. Draeger, and A. A. Correa

Phys. Rev. Lett. 116, 043201 (2016) - Published 27 January, 2016

Ab initio simulations of electronic excitations produced when a semiconductor experiences a large perturbation show a new regime in electron-ion energy exchange whereby a defect state carries electrons across the band gap.

EDITORS' SUGGESTION

Coherent Population Trapping of a Single Nuclear Spin Under Ambient Conditions

P. Jamonneau, G. Hétet, A. Dréau, J.-F. Roch, and V. Jacques

Phys. Rev. Lett. 116, 043603 (2016) - Published 26 January, 2016

A dark state – a state that cannot emit or absorb photons – can be created by the hyperfine coupling of the electron spin of a single nitrogen-vacancy defect to a nearby $^{13}$ C nuclear spin.

EDITORS' SUGGESTION

Quantum Dephasing in a Gated GaAs Triple Quantum Dot due to Nonergodic Noise

M. R. Delbecq, T. Nakajima, P. Stano, T. Otsuka, S. Amaha, J. Yoneda, K. Takeda, G. Allison, A. Ludwig, A. D. Wieck, and S. Tarucha

Phys. Rev. Lett. 116, 046802 (2016) - Published 26 January, 2016

Near noise-free measurements of spin qubits in a GaAs quantum dot system are achieved by measuring the qubit dephasing time on a timescale faster than the noise decorrelation time.

EDITORS' SUGGESTION

Probing the Role of Mobility in the Collective Motion of Nonequilibrium Systems

Hongchuan Shen, Peng Tan, and Lei Xu

Phys. Rev. Lett. 116, 048302 (2016) - Published 29 January, 2016

Steel spheres placed on a square grid, connected by springs, and individually driven by motors are used to investigate the vibrational modes of a nonequilibrium system.

LETTERS

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

Local Scale Transformations on the Lattice with Tensor Network Renormalization

G. Evenbly and G. Vidal

Phys. Rev. Lett. 116, 040401 (2016) - Published 28 January, 2016

EDITORS' SUGGESTION

Permutation Symmetry Determines the Discrete Wigner Function

Huangjun Zhu

Phys. Rev. Lett. 116, 040501 (2016) - Published 26 January, 2016

Underlying symmetries can be used to elucidate the structure and properties of the discrete version of the Wigner quasi-probability distribution function in phase space.

Strong Measurements Give a Better Direct Measurement of the Quantum Wave Function

Giuseppe Vallone and Daniele Dequal

Phys. Rev. Lett. 116, 040502 (2016) - Published 29 January, 2016

Soluble Model Fluids with Complete Scaling and Yang-Yang Features

Claudio A. Cerdeiriña, Gerassimos Orkoulas, and Michael E. Fisher

Phys. Rev. Lett. 116, 040601 (2016) - Published 26 January, 2016

Gravitation and Astrophysics

New Features of Gravitational Collapse in Anti–de Sitter Spacetimes

Daniel Santos-Oliván and Carlos F. Sopuerta

Phys. Rev. Lett. 116, 041101 (2016) - Published 26 January, 2016

Audio-Band Frequency-Dependent Squeezing for Gravitational-Wave Detectors

Eric Oelker, Tomoki Isogai, John Miller, Maggie Tse, Lisa Barsotti, Nergis Mavalvala, and Matthew Evans

Phys. Rev. Lett. 116, 041102 (2016) - Published 29 January, 2016

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Evidence of Halo Assembly Bias in Massive Clusters

Hironao Miyatake, Surhud More, Masahiro Takada, David N. Spergel, Rachel Mandelbaum, Eli S. Rykoff, and Eduardo Rozo

Phys. Rev. Lett. 116, 041301 (2016) - Published 25 January, 2016

The clumping of galaxies and galaxy clusters has a subtle dependence on their assembly history—a predicted effect that has now been detected.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Dark Matter Halos as Particle Colliders: Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters

Manoj Kaplinghat, Sean Tulin, and Hai-Bo Yu

Phys. Rev. Lett. 116, 041302 (2016) - Published 28 January, 2016

A new model has allowed researchers to test a theory for why the centers of dark matter halos are less dense than expected.

Elementary Particles and Fields

FEATURED IN PHYSICS

EDITORS' SUGGESTION

On-Shell Recursion Relations for Effective Field Theories

Clifford Cheung, Karol Kampf, Jiri Novotny, Chia-Hsien Shen, and Jaroslav Trnka

Phys. Rev. Lett. 116, 041601 (2016) - Published 25 January, 2016

Observation of $\bar{B} \to D^{(*)} π^{+} π^{-} ℓ^{-} \bar{ν}$ Decays in $e^{+} e^{-}$ Collisions at the $Υ (4 S)$ Resonance

J. P. Lees et al. (BABAR Collaboration)

Phys. Rev. Lett. 116, 041801 (2016) - Published 26 January, 2016

Measurement of Azimuthal Asymmetries in Inclusive Charged Dipion Production in $e^{+} e^{-}$ Annihilations at $\sqrt{s} = 3.65 GeV$

M. Ablikim et al. (BESIII Collaboration)

Phys. Rev. Lett. 116, 042001 (2016) - Published 27 January, 2016

Nuclear Physics

Observation of Anomalous Internal Pair Creation in ${}^{8}{Be}$ : A Possible Indication of a Light, Neutral Boson

A. J. Krasznahorkay, M. Csatlós, L. Csige, Z. Gácsi, J. Gulyás, M. Hunyadi, I. Kuti, B. M. Nyakó, L. Stuhl, J. Timár, T. G. Tornyi, Zs. Vajta, T. J. Ketel, and A. Krasznahorkay

Phys. Rev. Lett. 116, 042501 (2016) - Published 26 January, 2016

Atomic, Molecular, and Optical Physics

Electron Localization in Dissociating ${H_{2}}^{+}$ by Retroaction of a Photoelectron onto Its Source

M. Waitz, D. Aslitürk, N. Wechselberger, H. K. Gill, J. Rist, F. Wiegandt, C. Goihl, G. Kastirke, M. Weller, T. Bauer, D. Metz, F. P. Sturm, J. Voigtsberger, S. Zeller, F. Trinter, G. Schiwietz, T. Weber, J. B. Williams, M. S. Schöffler, L. Ph. H. Schmidt, T. Jahnke, and R. Dörner

Phys. Rev. Lett. 116, 043001 (2016) - Published 26 January, 2016

Doppler Cooling Trapped Ions with a UV Frequency Comb

Josue Davila-Rodriguez, Akira Ozawa, Theodor W. Hänsch, and Thomas Udem

Phys. Rev. Lett. 116, 043002 (2016) - Published 26 January, 2016

EDITORS' SUGGESTION

Electron Elevator: Excitations across the Band Gap via a Dynamical Gap State

A. Lim, W. M. C. Foulkes, A. P. Horsfield, D. R. Mason, A. Schleife, E. W. Draeger, and A. A. Correa

Phys. Rev. Lett. 116, 043201 (2016) - Published 27 January, 2016

Feshbach-Resonance-Enhanced Coherent Atom-Molecule Conversion with Ultranarrow Photoassociation Resonance

Shintaro Taie, Shunsuke Watanabe, Tomohiro Ichinose, and Yoshiro Takahashi

Phys. Rev. Lett. 116, 043202 (2016) - Published 27 January, 2016

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Mechanically Mediated Microwave Frequency Conversion in the Quantum Regime

F. Lecocq, J. B. Clark, R. W. Simmonds, J. Aumentado, and J. D. Teufel

Phys. Rev. Lett. 116, 043601 (2016) - Published 26 January, 2016

A new device converts the frequency of a photon using the vibrations in a mechanical oscillator.

Quantum Optics Theory of Electronic Noise in Coherent Conductors

Arne L. Grimsmo, Farzad Qassemi, Bertrand Reulet, and Alexandre Blais

Phys. Rev. Lett. 116, 043602 (2016) - Published 27 January, 2016

EDITORS' SUGGESTION

Coherent Population Trapping of a Single Nuclear Spin Under Ambient Conditions

P. Jamonneau, G. Hétet, A. Dréau, J.-F. Roch, and V. Jacques

Phys. Rev. Lett. 116, 043603 (2016) - Published 26 January, 2016

A dark state – a state that cannot emit or absorb photons – can be created by the hyperfine coupling of the electron spin of a single nitrogen-vacancy defect to a nearby $^{13}$ C nuclear spin.

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Cavity Light Bullets in Passively Mode-Locked Semiconductor Lasers

J. Javaloyes

Phys. Rev. Lett. 116, 043901 (2016) - Published 27 January, 2016

Universal Nature of the Nonlinear Stage of Modulational Instability

Gino Biondini and Dionyssios Mantzavinos

Phys. Rev. Lett. 116, 043902 (2016) - Published 27 January, 2016

Optical Rogue Waves in Vortex Turbulence

Christopher J. Gibson, Alison M. Yao, and Gian-Luca Oppo

Phys. Rev. Lett. 116, 043903 (2016) - Published 27 January, 2016

Optimal Phase-Control Strategy for Damped-Driven Duffing Oscillators

R. Meucci, S. Euzzor, E. Pugliese, S. Zambrano, M. R. Gallas, and J. A. C. Gallas

Phys. Rev. Lett. 116, 044101 (2016) - Published 26 January, 2016

Optimal Parametric Feedback Excitation of Nonlinear Oscillators

David J. Braun

Phys. Rev. Lett. 116, 044102 (2016) - Published 28 January, 2016

Displacement of an Electrically Charged Drop on a Vibrating Bath

M. Brandenbourger, N. Vandewalle, and S. Dorbolo

Phys. Rev. Lett. 116, 044501 (2016) - Published 26 January, 2016

Plasma and Beam Physics

Quantum Radiation Reaction: From Interference to Incoherence

Victor Dinu, Chris Harvey, Anton Ilderton, Mattias Marklund, and Greger Torgrimsson

Phys. Rev. Lett. 116, 044801 (2016) - Published 29 January, 2016

Condensed Matter: Structure, etc.

Concept of a Contact Spectrum and Its Applications in Atomic Quantum Hall States

Mingyuan He, Shaoliang Zhang, Hon Ming Chan, and Qi Zhou

Phys. Rev. Lett. 116, 045301 (2016) - Published 26 January, 2016

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Thermodynamics of an Attractive 2D Fermi Gas

K. Fenech, P. Dyke, T. Peppler, M. G. Lingham, S. Hoinka, H. Hu, and C. J. Vale

Phys. Rev. Lett. 116, 045302 (2016) - Published 27 January, 2016

Two separate groups have extracted the thermodynamic equation of state for a two-dimensional gas of fermionic atoms, revealing its peculiar quantum features.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Equation of State of Ultracold Fermions in the 2D BEC-BCS Crossover Region

I. Boettcher, L. Bayha, D. Kedar, P. A. Murthy, M. Neidig, M. G. Ries, A. N. Wenz, G. Zürn, S. Jochim, and T. Enss

Phys. Rev. Lett. 116, 045303 (2016) - Published 27 January, 2016

Two separate groups have extracted the thermodynamic equation of state for a two-dimensional gas of fermionic atoms, revealing its peculiar quantum features.

Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines

Mark J. H. Ku, Biswaroop Mukherjee, Tarik Yefsah, and Martin W. Zwierlein

Phys. Rev. Lett. 116, 045304 (2016) - Published 27 January, 2016

Pairing of Fermions with Unequal Effective Charges in an Artificial Magnetic Field

F. Nur Ünal and M. Ö. Oktel

Phys. Rev. Lett. 116, 045305 (2016) - Published 29 January, 2016

Apparent First-Order Wetting and Anomalous Scaling in the Two-Dimensional Ising Model

X.-T. Wu, D. B. Abraham, and J. O. Indekeu

Phys. Rev. Lett. 116, 046101 (2016) - Published 26 January, 2016

Condensed Matter: Electronic Properties, etc.

Chern Kondo Insulator in an Optical Lattice

Hua Chen, Xiong-Jun Liu, and X. C. Xie

Phys. Rev. Lett. 116, 046401 (2016) - Published 26 January, 2016

Kibble-Zurek Mechanism in Topologically Nontrivial Zigzag Chains of Polariton Micropillars

D. D. Solnyshkov, A. V. Nalitov, and G. Malpuech

Phys. Rev. Lett. 116, 046402 (2016) - Published 29 January, 2016

Kondo Breakdown and Quantum Oscillations in ${SmB}_{6}$

Onur Erten, Pouyan Ghaemi, and Piers Coleman

Phys. Rev. Lett. 116, 046403 (2016) - Published 29 January, 2016

Quantum Oscillation in Narrow-Gap Topological Insulators

Long Zhang, Xue-Yang Song, and Fa Wang

Phys. Rev. Lett. 116, 046404 (2016) - Published 29 January, 2016

Anomalous Coulomb Drag in Electron-Hole Bilayers due to the Formation of Excitons

Dmitry K. Efimkin and Victor Galitski

Phys. Rev. Lett. 116, 046801 (2016) - Published 26 January, 2016

EDITORS' SUGGESTION

Quantum Dephasing in a Gated GaAs Triple Quantum Dot due to Nonergodic Noise

M. R. Delbecq, T. Nakajima, P. Stano, T. Otsuka, S. Amaha, J. Yoneda, K. Takeda, G. Allison, A. Ludwig, A. D. Wieck, and S. Tarucha

Phys. Rev. Lett. 116, 046802 (2016) - Published 26 January, 2016

Near noise-free measurements of spin qubits in a GaAs quantum dot system are achieved by measuring the qubit dephasing time on a timescale faster than the noise decorrelation time.

Quantum Transport and Observation of Dyakonov-Perel Spin-Orbit Scattering in Monolayer ${MoS}_{2}$

H. Schmidt, I. Yudhistira, L. Chu, A. H. Castro Neto, B. Özyilmaz, S. Adam, and G. Eda

Phys. Rev. Lett. 116, 046803 (2016) - Published 29 January, 2016

Magnetostriction and Magnetostructural Domains in Antiferromagnetic ${YBa}_{2} {Cu}_{3} O_{6}$

B. Náfrádi, T. Keller, F. Hardy, C. Meingast, A. Erb, and B. Keimer

Phys. Rev. Lett. 116, 047001 (2016) - Published 27 January, 2016

Anisotropic Absorption of Pure Spin Currents

A. A. Baker, A. I. Figueroa, C. J. Love, S. A. Cavill, T. Hesjedal, and G. van der Laan

Phys. Rev. Lett. 116, 047201 (2016) - Published 27 January, 2016

Complex Field-Induced States in Linarite ${PbCuSO}_{4} (OH)_{2}$ with a Variety of High-Order Exotic Spin-Density Wave States

B. Willenberg, M. Schäpers, A. U. B. Wolter, S.-L. Drechsler, M. Reehuis, J.-U. Hoffmann, B. Büchner, A. J. Studer, K. C. Rule, B. Ouladdiaf, S. Süllow, and S. Nishimoto

Phys. Rev. Lett. 116, 047202 (2016) - Published 27 January, 2016

Spatial Evolution of the Ferromagnetic Phase Transition in an Exchange Graded Film

B. J. Kirby, H. F. Belliveau, D. D. Belyea, P. A. Kienzle, A. J. Grutter, P. Riego, A. Berger, and Casey W. Miller

Phys. Rev. Lett. 116, 047203 (2016) - Published 29 January, 2016

Parametric Harmonic Generation as a Probe of Unconstrained Spin Magnetization Precession in the Shallow Barrier Limit

Amir Capua, Charles Rettner, and Stuart S. P. Parkin

Phys. Rev. Lett. 116, 047204 (2016) - Published 29 January, 2016

Polymer, Soft Matter, Biological, and Interdisciplinary Physics

Density Shock Waves in Confined Microswimmers

Alan Cheng Hou Tsang and Eva Kanso

Phys. Rev. Lett. 116, 048101 (2016) - Published 26 January, 2016

Solvent Role in the Formation of Electric Double Layers with Surface Charge Regulation: A Bystander or a Key Participant?

Mark E. Fleharty, Frank van Swol, and Dimiter N. Petsev

Phys. Rev. Lett. 116, 048301 (2016) - Published 26 January, 2016

EDITORS' SUGGESTION

Probing the Role of Mobility in the Collective Motion of Nonequilibrium Systems

Hongchuan Shen, Peng Tan, and Lei Xu

Phys. Rev. Lett. 116, 048302 (2016) - Published 29 January, 2016

Steel spheres placed on a square grid, connected by springs, and individually driven by motors are used to investigate the vibrational modes of a nonequilibrium system.

ERRATA

Erratum: Vanishing Quantum Discord is Necessary and Sufficient for Completely Positive Maps [Phys. Rev. Lett. 102, 100402 (2009)]

Alireza Shabani and Daniel A. Lidar

Phys. Rev. Lett. 116, 049901 (2016) - Published 29 January, 2016

Erratum: Strong Monogamy Conjecture for Multiqubit Entanglement: The Four-Qubit Case [Phys. Rev. Lett. 113, 110501 (2014)]

Bartosz Regula, Sara Di Martino, Soojoon Lee, and Gerardo Adesso

Phys. Rev. Lett. 116, 049902 (2016) - Published 29 January, 2016

Erratum: Topological Jamming of Spontaneously Knotted Polyelectrolyte Chains Driven through a Nanopore [Phys. Rev. Lett. 109, 118301 (2012)]

A. Rosa, M. Di Ventra, and C. Micheletti

Phys. Rev. Lett. 116, 049903 (2016) - Published 29 January, 2016