Stationary states of a rotating Bose-Einstein condensate: Routes to vortex nucleation

被引：301

作者：

Madison, KW ^{[1
]}

Chevy, F ^{[1
]}

Bretin, V ^{[1
]}

Dalibard, J ^{[1
]}

机构：

[1] Ecole Normale Super, Dept Phys, Lab Kastler Brossel, F-75005 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.86.4443

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a focused laser beam we stir a Rb-87 Bose-Einstein condensate confined in a magnetic trap. We observe that the steady states of the condensate correspond to an elliptic cloud, stationary in the rotating frame. These steady states depend nonlinearly on the stirring parameters (amplitude and frequency), and various solutions can be reached experimentally depending on the path followed in this parameter space. These states can be dynamically unstable and we observe that such instabilities lead to vortex nucleation in the condensate.

引用

页码：4443 / 4446

页数：4

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