Stationary and moving solitons in spin-orbit-coupled spin-1 Bose-Einstein condensates
Stationary and moving solitons in spin-orbit-coupled spin-1 Bose-Einstein condensates作者机构：Key Laboratory of Atomic Molecular Physics Functional Materials of Gansu Province College of Physics and Electronic Engineering Northwest Normal University Lanzhou 730070 China
出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)
年 卷 期：2018年第13卷第2期
页 面：31-37页
核心收录：
学科分类：0810[工学-信息与通信工程] 07[理学] 08[工学] 070201[理学-理论物理] 081001[工学-通信与信息系统] 0702[理学-物理学]
基 金：This work was supported by the National Natural Science Foundation of China under Grant Nos. 11475027 11764039 11274255 and 11305132 the Natural Science Founda- tion of Gansu Province under Grant No. 17JR5RA076 and the Sci- entific Research Project of Gansu Higher Education under Crant No. 2016A-005
主 题：spin-orbit coupling Bose-Einstein condensate soliton perturbation method
摘 要：We investigate the matter-wave sohtons in a spin-orbit-coupled spin-1 Bose-Einstein condensate us- ing a multiscale perturbation method. Beginning with the one-dimensional spin-orbit-coupled three- component Gross-Pitaevskii equations, we derive a single nonlinear SehrSdinger equation, which allows determination of the analytical soliton solutions of the system. Stationary and moving solitons in the system are derived. In particular, a parameter space for different existing soliton types is provided. It is shown that there exist only dark or bright sohtons when the spin-orbit coupling is weak, with the solitons depending onthe atomic interactions. However, when the spin-orbit coupling is strong, both dark and bright solitons exist, being determined by the Raman coupling. Our analytical solutions are confirmed by direct numerical simulations.
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