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 ...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.展开更多
Three types of vortex-pair are identified in two-component Bose-Einstein condensates （BEC） of dif- ferent kinds of spin-orbit coupling. One type holds the two vortices in one component of the two- component condensa...Three types of vortex-pair are identified in two-component Bose-Einstein condensates （BEC） of dif- ferent kinds of spin-orbit coupling. One type holds the two vortices in one component of the two- component condensates. Both the other two types hold a vortex in each component of the two- component condensates, and exhibit meron-pair textures that have either null or unit topological charge, respectively. The cores of the two vortices are connected by a string of the relative phase jump. These vortex pairs can be generated from a vortex-free wave packet by incorporating different non- Abelian gauge field into the BEC. When a Rabi coupling is introduced, the distance between the two cores is effectively controlled by the Rabi coupling strength and a transition of vortex configurations is observed.展开更多
基金support from the NSF of China under grant no.11604193the supported by Innovation project for graduate students in Shanxi Province(grant no.2019SY305).
文摘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.
基金This work was supported by the National Natural Science Foundation of China under Grant Nos. 11604193 and 11774034, and the Natural Science Foundation for Young Sci- entists of Shanxi Province, China （Grant No. 201601D202012）.
文摘Three types of vortex-pair are identified in two-component Bose-Einstein condensates （BEC） of dif- ferent kinds of spin-orbit coupling. One type holds the two vortices in one component of the two- component condensates. Both the other two types hold a vortex in each component of the two- component condensates, and exhibit meron-pair textures that have either null or unit topological charge, respectively. The cores of the two vortices are connected by a string of the relative phase jump. These vortex pairs can be generated from a vortex-free wave packet by incorporating different non- Abelian gauge field into the BEC. When a Rabi coupling is introduced, the distance between the two cores is effectively controlled by the Rabi coupling strength and a transition of vortex configurations is observed.
