Matter Wave Solitons at Finite Temperatures |
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Authors: | B Jackson C F Barenghi N P Proukakis |
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Affiliation: | (1) School of Mathematics and Statistics, University of Newcastle upon Tyne, Newcastle, NE1 7RU, UK |
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Abstract: | 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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Keywords: | 03 75 Lm 05 45 Yv 67 80 Gb |
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