Gain/loss effect on a bright solitary wave in a cigar-shaped attractive condensate in the presence of an expulsive parabolic potential

被引：0

作者：

王凤姣 ^{[1
]}

丁建文 ^{[1
]}

颜晓红 ^{[2
]}

王登龙 ^{[1
]}

机构：

[1] Department of Physics &:Institute for Nanophysics and Rare-earth Luminescence,Xiangtan University

[2] College of Science,Nanjing University of Aeronautics and Astronautics

来源：

Chinese Physics B | 2009年 / 18卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Bose-Einstein condensate; bright solitary wave; gain/loss;

D O I：

暂无

中图分类号：

O437 [非线性光学（强光与物质的作用）];

学科分类号：

摘要：

Taking into account both gain/loss and time-dependent atomic scattering length,this paper analytically derives an exact bright solitary wave in a cigar-shaped attractive condensate in the presence of an expulsive parabolic potential. Due to the balance of the scattering length and gain/loss,the bright solitary wave is shown to have constant amplitude. Especially,it is found that the bright solitary wave is accelerated by expulsive force,whose velocity can be modulated by changing the axial and transverse angular frequencies.The results are in good agreement with the experimental observations by Khaykovich et al(2002 Science 296 1290).

引用

页码：1737 / 1741

页数：5