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arXiv:1309.0667 · Physical Review A

Interaction effects on dynamic correlations in noncondensed Bose gases

A. Bezett, H. J. van Driel, M. P. Mink, Henk T. C. Stoof, R. A. Duine

Published Feb 24, 2014• 1 citation
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Abstract

We consider dynamic, i.e., frequency-dependent, correlations in noncondensed ultracold atomic Bose gases. In particular, we consider the single-particle correlation function and its power spectrum. We compute this power spectrum for a one-component Bose gas, and we show how it depends on the interatomic interactions that lead to a finite single-particle relaxation time. As another example, we consider the power spectrum of spin-current fluctuations for a two-component Bose gas and show how it is determined by the spin-transport relaxation time.

DOI
10.1103/physreva.89.023632

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