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

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

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.

Keywords: interactions between bright solitons Bose-Einstein condensates dynamics of solitons

Received: 07 November 2011
Revised: 10 February 2012
Accepted manuscript online:

PACS:	03.75.Lm	(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
	05.45.Yv	(Solitons)
	42.81.Dp	(Propagation, scattering, and losses; solitons)

Fund: 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).

Corresponding Authors: Jia-Ren Yan
E-mail: jiarenyan@hunnu.edu.cn

Cite this article:

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

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