Spinning up and down a Boltzmann gas -: art. no. 033607

被引:24
作者
Guéry-Odelin, D [1 ]
机构
[1] Ecole Normale Super, Dept Phys, Lab Kastler Brossel, F-75231 Paris 05, France
来源
PHYSICAL REVIEW A | 2000年 / 62卷 / 03期
关键词
D O I
10.1103/PhysRevA.62.033607
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Using the average method, we derive a closed set of linear equations that describes the spinning up of an harmonically trapped gas by a rotating anisotropy. We find explicit expressions for the time needed to transfer annular momentum as well as the decay time induced by a static residual anisotropy. These different time scales are compared with the measured nucleation time and lifetime of vortices by Madison et al. We find a good agreement that may emphasize the role played by the noncondensed component in those experiments.
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页数:6
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