Topological classification of vortex-core structures of spin-1 Bose-Einstein condensates

被引：21

作者：

Kobayashi, Shingo ^{[1
,2
,3
]}

Kawaguchi, Yuki ^{[1
]}

Nitta, Muneto ^{[2
,3
]}

Ueda, Masahito ^{[1
]}

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Keio Univ, Dept Phys, Yokohama, Kanagawa 2238511, Japan

[3] Keio Univ, Res & Educ Ctr Nat Sci, Yokohama, Kanagawa 2238511, Japan

来源：

PHYSICAL REVIEW A | 2012年 / 86卷 / 02期

关键词：

QUANTUM VORTEX; SYMMETRY; DEFECTS;

D O I：

10.1103/PhysRevA.86.023612

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We classify vortex-core structures according to the topology of the order parameter space. We develop a method to characterize how the order parameter changes inside the vortex core. We apply it to spin-1 Bose-Einstein condensates and show that the vortex-core structures are classified by winding numbers that are locally defined in the core region. We also show that a vortex-core structure with a nontrivial winding number can be stabilized under a negative quadratic Zeeman effect.

引用

页数：14

共 33 条

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