Bright solitons in spin-orbit-coupled Bose-Einstein condensates

被引：192
|
作者：
Xu, Yong [1 ,2 ]
Zhang, Yongping [3 ]
Wu, Biao [2 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[2] Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
[3] Univ Queensland, Sch Math & Phys, St Lucia, Qld 4072, Australia
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 01期
关键词：
DARK SOLITONS; MATTER-WAVES; DYNAMICS;
D O I：
10.1103/PhysRevA.87.013614
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study bright solitons in a Bose-Einstein condensate with a spin-orbit coupling that has been realized experimentally. Both stationary bright solitons and moving bright solitons are found. The stationary bright solitons are the ground states and possess well-defined spin-parity, a symmetry involving both spatial and spin degrees of freedom; these solitons are real valued but not positive definite, and the number of their nodes depends on the strength of spin-orbit coupling. For the moving bright solitons, their shapes are found to change with velocity due to the lack of Galilean invariance in the system. DOI: 10.1103/PhysRevA.87.013614
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页数：5
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