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arXiv · 1309.0667

Interaction effects on dynamic correlations in non-condensed Bose gases

A. Bezett·H. J. van Driel·M. P. Mink·H. T. C. Stoof·R. A. Duine
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Abstract

We consider dynamic, i.e., frequency-dependent, correlations in non-condensed 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 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.

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A. Bezett, H. J. van Driel, M. P. Mink, H. T. C. Stoof, R. A. Duine. 2013-09-03. Interaction effects on dynamic correlations in non-condensed Bose gases. https://doi.org/10.1103/physreva.89.023632

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