Dynamics of bright-bright solitons in Bose-Einstein condensate with Raman-induced one-dimensional spin-orbit coupling

被引:13
作者
Wen, Lin [1 ]
Zhang, Xiao-Fei [2 ]
Hu, Ai-Yuan [1 ]
Zhou, Jing [3 ]
Yu, Peng [1 ]
Xia, Lei [1 ]
Sun, Qing [4 ]
Ji, An-Chun [4 ]
机构
[1] Chongqing Normal Univ, Coll Phys & Elect Engn, Chongqing 401331, Peoples R China
[2] Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Time & Frequency Primary Stand, Xian 710600, Shaanxi, Peoples R China
[3] Chongqing Univ Posts & Telecommun, Dept Sci, Chongqing 400065, Peoples R China
[4] Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China
关键词
Soliton; Bose-Einstein condensate; Spin-orbit coupling; GROUND-STATES; GASES; DARK;
D O I
10.1016/j.aop.2018.01.018
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate the dynamics of bright-bright solitons in one-dimensional two-component Bose-Einstein condensates with Raman induced spin-orbit coupling, via the variational approximation and the numerical simulation of Gross-Pitaevskii equations. For the uniform system without trapping potential, we obtain two population balanced stationary solitons. By performing the linear stability analysis, we find a Goldstone eigenmode and an oscillation eigenmode around these stationary solitons. Moreover, we derive a general dynamical solution to describe the center-of-mass motion and spin evolution of the solitons under the action of spin-orbit coupling. The effects of a harmonic trap have also been discussed. (C) 2018 Elsevier Inc. All rights reserved.
引用
收藏
页码:180 / 191
页数:12
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