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Joule expansion of a quantum gas
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cond-mat.quant-gascond-mat.stat-mechphysics.atom-phquant-ph
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experimentsquantumariseatomicbosechangeclassicclassical-gas
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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 and quantitatively explain both cooling and heating effects, which arise, respectively, due to quantum statistics and inter-particle interactions.
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