Revisiting Joule-expansion experiments with a quantum gas

We revisit the classic Joule-expansion experiments, now with a quantum-degenerate atomic Bose gas. In contrast to the classical-gas experiments, where no temperature change was measured, here we observe both cooling and heating effects, which arise, respectively, due to quantum statistics and inter-...

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Bibliographic Details
Published in:arXiv.org 2024-10
Main Authors: Ho, Christopher J, Fischer, Simon M, Martirosyan, Gevorg, Morris, Sebastian J, Etrych, Jiří, Eigen, Christoph, Hadzibabic, Zoran
Format: Article
Language:English
Subjects:
Hartree approximation
High temperature effects
Particle interactions
Quantum statistics
Online Access:Get full text
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Summary:We revisit the classic Joule-expansion experiments, now with a quantum-degenerate atomic Bose gas. In contrast to the classical-gas experiments, where no temperature change was measured, here we observe both cooling and heating effects, which arise, respectively, due to quantum statistics and inter-particle interactions. Our observations are reproduced in numerical calculations within the Hartree-Fock approximation.
ISSN:2331-8422