Temperature Dependence of Vortex Nucleation in Gaseous Bose-Einstein Condensates

Details Temperature Dependence of Vortex Nucleation in Gaseous Bose-Einstein Condensates Temperature Dependence of Vortex Nucleation in Gaseous Bose-Einstein Condensates

2002-09-03

arxiv.org/abs/cond-mat/0209051v1

J. Low Temp. Phys. 103, 473 (2002)

Physics

Condensed Matter

Soft Condensed Matter

15 pages, 4 figures, to appear in J. Low Temp. Phys

Scientific paper

The formation of quantized vortices in trapped, gaseous Bose-Einstein condensates is considered. The thermodynamic stability of vortex states and the essential role of the surface excitations as a route for vortex penetration into the condensate are discussed. Special focus is on finite-temperature effects of the vortex nucleation process. It is concluded that the critical angular frequencies for exciting surface modes with the relevant multipolarities yield, also at finite temperatures, the appropriate thresholds for the nucleation of vortices in dilute Bose-Einstein condensates, in fair agreement with the recent experiments.

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