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：

Wang Feng-Jiao ^{[1
,2
]}

Ding Jian-Wen ^{[1
,2
]}

Yan Xiao-Hong ^{[3
]}

Wang Deng-Long ^{[1
,2
]}

机构：

[1] Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Inst Nanophys & Rare Earth Luminescence, Xiangtan 411105, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Peoples R China

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; BOSE-EINSTEIN CONDENSATE; ATOMIC SCATTERING LENGTH; DARK SOLITONS; DYNAMICS;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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