Composite solitons in SU(3) spin–orbit-coupling Bose gases  

作　　者：Hong-Xia Yue Yong-Kai Liu 

机构地区：[1]College of Physics and Information Engineering,Shanxi Normal University,Linfen 041000,China

出　　处：《Communications in Theoretical Physics》2020年第2期88-92,共5页理论物理通讯（英文版）

基　　金：support from the NSF of China under grant no.11604193;the supported by Innovation project for graduate students in Shanxi Province(grant no.2019SY305).

摘　　要：We study solitons in a spin-1 Bose–Einstein condensates with SU(3)spin–orbit coupling.We obtain the ground state and the metastable solution for solitons with attractive interactions by the imaginary-time evolution method.Compared with the SU(2)spin–orbit coupling,it is found that the solitons in SU(3)spin–orbit coupling show a new feature due to breaking the symmetry.The solitons called the composite solitons have mixing manifolds of ferromagnetic and antiferromagnetic states.This has stimulated people to study the topological excitation properties of SU(3)spin–orbit coupling and it is expected to find new quantum phases.We study solitons in a spin-1 Bose–Einstein condensates with SU(3) spin–orbit coupling. We obtain the ground state and the metastable solution for solitons with attractive interactions by the imaginary-time evolution method. Compared with the SU(2) spin–orbit coupling, it is found that the solitons in SU(3) spin–orbit coupling show a new feature due to breaking the symmetry. The solitons called the composite solitons have mixing manifolds of ferromagnetic and antiferromagnetic states. This has stimulated people to study the topological excitation properties of SU(3) spin–orbit coupling and it is expected to find new quantum phases.

关 键 词：composite SOLITONS Bose–Einstein condensates SU(3)spin–orbit-coupling 

分 类 号：O469[理学—凝聚态物理]