**One-dimensional systems of interacting particles offer researchers a window into macroscale quantum effects. To simplify ****analysis**** of such systems, researchers often treat them as continuous fluids rather than discrete bodies. However, this approach fails if the particles are not in thermal equilibrium. In 2016, researchers proposed a new hydrodynamic framework to solve this conundrum (see 27 December 2006 Viewpoint). Now, experiments show that this theory successfully describes the behavior of a 1D Bose gas as it is released from confinement, promising insights into a whole class of out-of-equilibrium many-body systems.**

Category: Science

Written by Kim Burrafato

Published on Tuesday, 05 March 2019 12:06

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