Ground states of SU(3) spin–orbit-coupled Bose–Einstein condensates with soft-core interaction in 2D radially periodic potentials
Yajun Wang, Mingfa Zheng, 方正 Fang Zheng +2 more
Abstract We consider the ground state properties of SU(3) spin–orbit-coupled (SOC) Bose–Einstein condensates (BECs) with soft-core interaction trapped in radially periodic potential. By minimizing the energy of the condensate, the effects of spin–orbit coupling and soft-core long-range interaction on the ground-state structure of such a system have been investigated for ferromagnetic and antiferromagnetic spin interaction cases. In the absence of soft-core interaction, our results show that the system has a rich variety of ground state phases, such as typical vortices, antivortices, domain wall and hexagonal vortex lattice. It is found that the spontaneous symmetry breaking and isolated density peaks appear in the system with the addition of soft-core interaction. We illustrate the physical mechanisms of different interactions in SU(3) SOC BECs.
Communications in Theoretical Physics•May 9, 2026•0 citations