Stable three-dimensional vortex solitons in Bose-Einstein condensates with nonlocal dipole-dipole interaction

被引：10

作者：

Lashkin, V. M. ^{[1
]}

Yakimenko, A. I. ^{[1
,2
]}

Zaliznyak, Yu A. ^{[1
]}

机构：

[1] Inst Nucl Res, UA-03680 Kiev, Ukraine

[2] Taras Shevchenko Natl Univ, Dept Phys, UA-03022 Kiev, Ukraine

来源：

PHYSICA SCRIPTA | 2009年 / 79卷 / 03期

关键词：

CONVERGENCE;

D O I：

10.1088/0031-8949/79/03/035305

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present spatially localized three-dimensional vortex solitons in Bose-Einstein condensates with local short-range and nonlocal dipole-dipole interactions. By means of a linear stability analysis, we investigate the stability of these structures and show that singly quantized vortices are stable provided that the chemical potential is positive and the number of atoms is below some critical value. The results are confirmed by direct numerical simulations of the Gross-Pitaevskii equation.

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页数：5

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