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Interaction effects on dynamic correlations in noncondensed Bose gases

By A. Bezett, H. J. Van Driel, M. P. Mink, H. T C Stoof and R. A. Duine


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. © 2014 American Physical Society

Topics: Atomic and Molecular Physics, and Optics
Year: 2014
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