Vortex stability and persistent currents in trapped Bose gases

被引：193

作者：

Rokhsar, DS

机构：

[1] Department of Physics, University of California, Berkeley, CA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.79.2164

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the stability of vortices in trapped dilute Bose gases. For weak coupling the vortex is unstable to single-particle excitations: the Bose condensate cannot support persistent currents, and the gas is not superfluid. For stronger coupling the azimuthal symmetry of the rotating condensate is spontaneously broken, resulting in an off-center vortex that eventually spirals out of the trap.

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页码：2164 / 2167

页数：4

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