论文标题
抗铁磁性自旋-1玻色 - 因子凝结物中列型自旋涡流的性质
Properties of a nematic spin vortex in an antiferromagnetic spin-1 Bose-Einstein condensate
论文作者
论文摘要
具有抗铁磁相互作用的自旋1冷凝物在易于平面极相中支持列旋转涡流。这些漩涡具有固定导演的$2π$绕组，其核心结构取决于二次Zeeman Energy。我们表征了均匀的准二维系统中列型自旋涡流的特性。我们还获得了涡流激发光谱，并使用它来量化其稳定性，以免分离为两个半量子涡流，从而找到一个参数状态，其中列旋转涡流动态稳定。这些结果得到了完整的动态模拟的支持。
A spin-1 condensate with antiferromagnetic interactions supports nematic spin vortices in the easy-plane polar phase. These vortices have a $2π$ winding of the nematic director, with a core structure that depends on the quadratic Zeeman energy. We characterize the properties of the nematic spin vortex in a uniform quasi-two-dimensional system. We also obtain the vortex excitation spectrum and use it to quantify its stability against dissociating into two half-quantum vortices, finding a parameter regime where the nematic spin vortex is dynamically stable. These results are supported by full dynamical simulations.
