Free expansion of attractive and repulsive Bose-Einstein condensed vortex states

被引：17

作者：

Adhikari, SK ^{[1
]}

机构：

[1] Univ Estadual Paulista, Inst Fis Teor, BR-01405900 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW A | 2002年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.65.033616

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Free expansion of attractive and repulsive Bose-Einstein condensed vortex states formed in an axially symmetric trap is investigated using the numerical solution of the time-dependent Gross-Pitaevskii equation. In a repulsive condensate the vortex-core radius is much smaller than the radial root-mean-square (rms) radius, which makes the experimental observation of the vortex core difficult. The opposite is found to be true in an attractive condensate that makes it a better candidate for experimental observation. Also, in all cases the ratio of vortex-core radius to radial rms radius increases as the angular momentum of the vortex increases. This makes the vortex states with higher angular momenta more suitable for experimental confirmation.

引用

页数：6

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