Featured in Physics Editors' Suggestion
Spin Quantum Heat Engine Quantified by Quantum Steering
Wentao Ji, Zihua Chai, Mengqi Wang, Yuhang Guo, Xing Rong, Fazhan Shi, Changliang Ren, Ya Wang, and Jiangfeng Du
Phys. Rev. Lett. 128, 090602 (2022) – Published 1 March 2022
Physics logo Synopsis: Steering Toward a Quantum Advantage  

New experiments make clear how quantum effects—in the form of quantum correlations—can make an engine perform better than classical limits.

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Featured in Physics Editors' Suggestion
First Directional Measurement of Sub-MeV Solar Neutrinos with Borexino
M. Agostini et al. (Borexino Collaboration)
Phys. Rev. Lett. 128, 091803 (2022) – Published 3 March 2022
Physics logo Synopsis: Solar-Neutrino Detection Gets a Boost

A new measurement method allows researchers to obtain directional information about low-energy solar neutrinos, something that was previously hard to do.

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Featured in Physics Editors' Suggestion
Dirac Magnons, Nodal Lines, and Nodal Plane in Elemental Gadolinium
A. Scheie, Pontus Laurell, P. A. McClarty, G. E. Granroth, M. B. Stone, R. Moessner, and S. E. Nagler
Phys. Rev. Lett. 128, 097201 (2022) – Published 2 March 2022
Physics logo Viewpoint: Topological Magnetism Turns Elementary

Neutron scattering experiments provide the evidence of massless spin waves, called Dirac magnons, in a single-element magnetic crystal, offering a new window into topological magnetism.

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Accurate Determination of Hubble Attenuation and Amplification in Expanding and Contracting Cold-Atom Universes
S. Banik, M. Gutierrez Galan, H. Sosa-Martinez, M. Anderson, S. Eckel, I. B. Spielman, and G. K. Campbell
Phys. Rev. Lett. 128, 090401 (2022) – Published 28 February 2022

Using phonons as an analog to cosmological scalar fields, Hubble attenuation and amplification can be accurately measured in laboratory Bose-Einstein condensates.

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Hydrodynamic Relaxation in a Strongly Interacting Fermi Gas
Xin Wang, Xiang Li, Ilya Arakelyan, and J. E. Thomas
Phys. Rev. Lett. 128, 090402 (2022) – Published 3 March 2022

Thermal conductivity and shear viscosity in a universal normal fluid have been measured independently for the first time.

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