Analytical estimate of the critical velocity for vortex pair creation in trapped Bose condensates

被引：23
|
作者：
Crescimanno, M [1 ]
Koay, CG
Peterson, R
Walsworth, R
机构：
[1] Youngstown State Univ, Dept Phys & Astron, Youngstown, OH 44555 USA
[2] Berea Coll, Dept Phys, Berea, KY 40404 USA
[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
来源：
PHYSICAL REVIEW A | 2000年 / 62卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.62.063612
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We use a Thomas-Fermi approximation that includes the leading kinetic terms due to fluid motion to estimate analytically the critical velocity for the formation of vortex pairs in harmonically trapped Bose-Einstein condensates. We find rough agreement between this analytical estimate and recent experiments on trapped sodium gas condensates.
引用
收藏
页码：063612 / 063611
页数：7
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