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arXiv · cond-mat/9905062

Dissipative dynamics of a kink state in a Bose-condensed gas

P. O. Fedichev·A. E. Muryshev·G. V. Shlyapnikov
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Abstract

We develop a theory of dissipative dynamics of a kink state in a finite-temperature Bose-condensed gas. We find that due to the interaction with the thermal cloud the kink state accelerates towards the velocity of sound and continuously transforms to the ground-state condensate. We calculate the life-time of a kink state in a trapped gas and discuss possible experimental implications.

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P. O. Fedichev, A. E. Muryshev, G. V. Shlyapnikov. 1999-05-18. Dissipative dynamics of a kink state in a Bose-condensed gas. https://doi.org/10.1103/physreva.60.3220

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