Dynamics of vortex lattice formation in a rotating Bose-Einstein condensate

被引:3
作者
Tsubota, M [1 ]
Kasamatsu, K
Ueda, M
机构
[1] Osaka City Univ, Dept Phys, Osaka 5588585, Japan
[2] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan
关键词
Bose-Einstein condensation; quantized vortex; Gross-Pitaevskii equation;
D O I
10.1016/S0921-4526(02)01876-8
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We study the dynamics of vortex lattice formation of a rotating trapped Bose-Einstein condensate by numerically solving the two-dimensional Gross-Pitaevskii equation with a dissipative term. The condensate trapped in a quadratic potential forms a triangle lattice of quantized vortices, following the damped elliptic oscillation of the condensate and the excitation of surface waves, which is consistent with the experimental results of an ENS group. A fast rotating condensate confined in a quadratic-plus-quartic potential generates a giant vortex absorbing all phase defects into a single density hole, where a quasi-one-dimensional circular superflow is realized. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:21 / 22
页数:2
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