Stable knots in the trapped Bose-Einstein condensates

被引：7

作者：

Liu, Yong-Kai ^{[1
]}

Feng, Shiping ^{[1
]}

Yang, Shi-Jie ^{[1
,2
]}

机构：

[1] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China

[2] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China

来源：

EPL | 2014年 / 106卷 / 05期

基金：

美国国家科学基金会;

关键词：

DYNAMICS;

D O I：

10.1209/0295-5075/106/50005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The knot of the spin-texture is studied within the two-component Bose-Einstein condensates which are described by the nonlinear Gross-Pitaevskii equations. We start from the noninteracting equations including an axisymmetric harmonic trap to obtain an exact solution, which exhibits a nontrivial topological structure. The spin-texture is a knot with an integral Hopf invariant. The stability of the knot is verified by numerically evolving the nonlinear Gross-Pitaevskii equations along imaginary time. Copyright (C) EPLA, 2014

引用

页数：11

共 31 条

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