Knot-like Mermin-Ho vortices in the superfluid 3He-A

被引:1
|
作者
Zhang, PM [1 ]
Duan, YS
Liu, X
Zhong, CK
机构
[1] Lanzhou Univ, Dept Math, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Mermin-Ho vortex; knot; Hopf invariant;
D O I
10.1016/j.aop.2004.04.006
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the topological properties of knots in superfluid He-3-A. The decomposition of SO(3) connection and its Abelian projection is presented. The topological structure of Mermin-Ho vortices is obtained with the Abelian projection from the viewpoint of phi-mapping theory. Furthermore, it is shown that the linking number of the knot-like Mermin-Ho vortices can be described with the Hopf invariant. At last, the evolution of the knots is discussed. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:16 / 25
页数:10
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