Spin-2 Bose-Einstein condensates in an annular trap with spin-orbit coupling
Spin-2 Bose-Einstein condensates in an annular trap with spin-orbit coupling
复制标题
自旋轨道耦合环形陷阱中的 Spin-2 玻色-爱因斯坦凝聚
DOI：
10.1016/j.rinp.2020.103437
复制
发表时间：
2020
影响因子：
5.3
通讯作者：
Wang Ji-Guo
中科院分区：
文献类型：
--
作者：
Li Yue-Qing;Sui Yun-Xia;Wang Ji-Guo
研究了二维同心耦合环形阱中自旋轨道耦合自旋2玻色-爱因斯坦凝聚体的基态相，分别考虑了自旋交换相互作用的吸引和排斥.对于具有吸引自旋交换相互作用的系统，内环的基态相密度沿方位沿着方向呈现出弱自旋轨道耦合强度的亮孤子，沿径向呈现出强自旋轨道耦合强度的沿着涡旋线.对于具有排斥自旋交换相互作用的系统，我们得到了项链态。随着自旋轨道耦合强度的增强，项链状态的花瓣数不断增加。研究了基态相的动量分布。
We study the ground-state phases of spin-orbit coupled spin-2 Bose-Einstein condensates in a two-dimensional concentrically coupled annular trap with the attractive and repulsive spin-exchange interactions, respectively. For the system with the attractive spin-exchange interaction, the ground-state phase densities in the inner ring show the bright solitons along the azimuthal direction with the weak spin-orbit coupling strength and the vortex line along the radial direction with the strong spin-orbit coupling strength. For the system with the repulsive spin-exchange interaction, the necklace-like state is shown. The number of petals of the necklace like state continuous growth as the spin-orbit coupling strength enhanced. The momentum distributions of the ground-state phases are also studied.