Topological Structure of Vortices in Multicomponent Bose-Einstein Condensates

被引：0
|
作者：
Xu Tao [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Coll Elect & Elect Engn, Wuhan 430074, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 09期
基金：
中国国家自然科学基金;
关键词：
FIELD-THEORY; VORTEX; SOLITONS; MODEL;
D O I：
10.1088/0256-307X/26/9/096701
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The structure of the vortex in a two-component Bose-Einstein condensate is studied by the method of Dirac delta function. The vortex can be characterized by the Brouwer degree and Hopf index, i.e., beta(1)eta(1), beta(2)eta(2). The circulation of the vortex can be a fraction, which is different from the usual result for a one-component condensate. The kinetic helicity of vortices is calculated.
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页数：4
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