Matter wave solitons at finite temperatures

Details Matter wave solitons at finite temperatures Matter wave solitons at finite temperatures

2006-10-03

arxiv.org/abs/cond-mat/0610082v1

Physics

Condensed Matter

Statistical Mechanics

6 pages, 2 figures, submitted to the Proceedings of QFS '06

Scientific paper

10.1007/s10909-007-9410-1

We consider the dynamics of a dark soliton in an elongated harmonically trapped Bose-Einstein condensate. A central question concerns the behavior at finite temperatures, where dissipation arises due to the presence of a thermal cloud. We study this problem using coupled Gross-Pitaevskii and $N$-body simulations, which include the mean field coupling between the condensate and thermal cloud. We find that the soliton decays relatively quickly even at very low temperatures, with the decay rate increasing with rising temperature.

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