Fractional-charge vortex in a spinor Bose-Einstein condensate

被引：12

作者：

Gautam, Sandeep ^{[1
]}

Adhikari, S. K. ^{[1
]}

机构：

[1] Univ Estadual Paulista UNESP, Inst Fis Teor, BR-01140070 Sao Paulo, SP, Brazil

来源：

PHYSICAL REVIEW A | 2016年 / 93卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

COLLECTIVE EXCITATIONS; FESHBACH RESONANCES; QUANTUM VORTEX; DYNAMICS; GAS;

D O I：

10.1103/PhysRevA.93.013630

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We classify all possible fractional charge vortices of charge less than unity in spin-1 and spin-2 polar and cyclic Bose-Einstein condensates (BECs) with zero magnetization. Statics and dynamics of these vortices in quasi-two-dimensional spinor BECs are studied employing an accurate numerical solution and a Lagrange variational approximation. The results for density and collective-mode oscillation are illustrated using the fractional-charge BEC vortex of Na-23 and Rb-87 atoms with realistic interaction and trapping potential parameters.

引用

页数：8

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