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Dipolar Bose gas with SU (3) spin-orbit coupling held under a toroidal trap
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DOI：10.15302/frontphys.2025.022202.png)
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Abstract
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We consider a dipolar spin-1 Bose gas with SU(3) spin-orbit coupling trapped in a two-dimensional toroidal trap. Due to the combined effects of SU(3) spin-orbit coupling, dipole-dipole interaction, and spin-exchange interaction, the system exhibits a rich variety of ground-state phases and topological defects, including modified stripe, azimuthal distributed petal and triangular lattice, double-quantum spin vortices, and so on. In particular, by studying the spin texture of such a system, it is found that the formation and transformation between meron and skyrmion topological spin textures can be realized by a choice of dipole-dipole interaction, SU(3) spin-orbit coupling, and spin-exchange interaction. We also give an experimental protocol to observe such novel states within current experimental capacity.
Keywords:
Bose-Einstein condensate
spin-orbit coupling
dipolar condensate
quantum vortex
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