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
We consider a SU(3) spin–orbit coupled Bose–Einstein condensate confined in a harmonic plus quartic trap.The ground-state wave functions of such a system are obtained by minimizing the Gross–Pitaevskii energy funct...We consider a SU(3) spin–orbit coupled Bose–Einstein condensate confined in a harmonic plus quartic trap.The ground-state wave functions of such a system are obtained by minimizing the Gross–Pitaevskii energy functional, and the effects of the spin-dependent interaction and spin–orbit coupling are investigated in detail.For the case of ferromagnetic spin interaction, the SU(3) spin–orbit coupling induces a threefold-degenerate plane wave ground state with nontrivial spin texture.For the case of antiferromagnetic spin interaction, the system shows phase separation for weak SU(3) spin–orbit coupling, where three discrete minima with unequal weights in momentum space are selected, while hexagonal honeycomb lattice structure for strong SU(3) SOC, where three discrete minima with equal weights are selected.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.
文摘We consider a SU(3) spin–orbit coupled Bose–Einstein condensate confined in a harmonic plus quartic trap.The ground-state wave functions of such a system are obtained by minimizing the Gross–Pitaevskii energy functional, and the effects of the spin-dependent interaction and spin–orbit coupling are investigated in detail.For the case of ferromagnetic spin interaction, the SU(3) spin–orbit coupling induces a threefold-degenerate plane wave ground state with nontrivial spin texture.For the case of antiferromagnetic spin interaction, the system shows phase separation for weak SU(3) spin–orbit coupling, where three discrete minima with unequal weights in momentum space are selected, while hexagonal honeycomb lattice structure for strong SU(3) SOC, where three discrete minima with equal weights are selected.
