Interactions between bright solitons in different species of Bose–Einstein condensates

doi:10.1088/1674-1056/21/6/060304

中国物理B ›› 2012, Vol. 21 ›› Issue (6): 60304-060304.doi: 10.1088/1674-1056/21/6/060304

Interactions between bright solitons in different species of Bose–Einstein condensates

颜家壬, 周杰

Department of Physics, Hunan Normal University, Changsha 410081, China

收稿日期:2011-11-07 修回日期:2012-02-10 出版日期:2012-05-01 发布日期:2012-05-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10775049) and the Natural Science Foundation of Hunan Province of China (Grant No. 09JJ6008).

Interactions between bright solitons in different species of Bose–Einstein condensates

Jia-Ren Yan(颜家壬)^† and Jie Zhou(周杰)

Department of Physics, Hunan Normal University, Changsha 410081, China

Received:2011-11-07 Revised:2012-02-10 Online:2012-05-01 Published:2012-05-01
Contact: Jia-Ren Yan E-mail:jiarenyan@hunnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10775049) and the Natural Science Foundation of Hunan Province of China (Grant No. 09JJ6008).

摘要/Abstract

摘要： The dynamics of a bright-bright vector soliton in a cigar-shaped Bose-Einstein condensate trapping in a harmonic potential is studied. The interaction between bright solitons in different species with small separation is derived. Unlike the interaction between solitons of the same species, it is independent of the phase difference between solitons. It may be of attraction or repulsion. In the former case, each soliton will oscillate about and pass through each other around the mass-center of the system, which will also oscillate harmonically due to the harmonic trapping potential.

关键词: interactions between bright solitons, Bose-Einstein condensates, dynamics of solitons

Abstract: The dynamics of a bright-bright vector soliton in a cigar-shaped Bose-Einstein condensate trapping in a harmonic potential is studied. The interaction between bright solitons in different species with small separation is derived. Unlike the interaction between solitons of the same species, it is independent of the phase difference between solitons. It may be of attraction or repulsion. In the former case, each soliton will oscillate about and pass through each other around the mass-center of the system, which will also oscillate harmonically due to the harmonic trapping potential.

Key words: interactions between bright solitons, Bose-Einstein condensates, dynamics of solitons

中图分类号: (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

03.75.Lm

05.45.Yv (Solitons) 42.81.Dp (Propagation, scattering, and losses; solitons)

颜家壬, 周杰. Interactions between bright solitons in different species of Bose–Einstein condensates[J]. 中国物理B, 2012, 21(6): 60304-060304.

Jia-Ren Yan(颜家壬) and Jie Zhou(周杰) . Interactions between bright solitons in different species of Bose–Einstein condensates[J]. Chin. Phys. B, 2012, 21(6): 60304-060304.

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Interactions between bright solitons in different species of Bose–Einstein condensates

Interactions between bright solitons in different species of Bose–Einstein condensates

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