论文标题
静态Ferrodark Solitons的核心结构
Core structure of static ferrodark solitons in a spin-1 Bose-Einstein condensate
论文作者
论文摘要
我们开发了静态Ferrodark solitons的分析描述，即在磁性顺序的$ \ Mathbb {z} _2 $拓扑缺陷，在铁磁旋转1 Bose-1 Bose-Einstein冷凝物的易于平面相。我们发现I型Ferrodark Soliton具有单个宽度，而II型Ferrodark Soliton具有两个特征长度尺度。拟议的Ansatzes与数值结果表现出了极好的一致性。还讨论了Ferrodark Solitons的自旋平线幅度，列张量密度和列表。 $ \ mathbb {z} _2 $质量超流体顺序中的拓扑缺陷，深色 - 黑暗矢量solitons，完全在存在精确的ferrodark solitons的参数方面获得。黑暗向黑暗矢量孤子具有比Ferrodark Soliton更高的激发能。
We develop an analytical description of static ferrodark solitons, the $\mathbb{Z}_2$ topological defects in the magnetic order, in the easy-plane phase of ferromagnetic spin-1 Bose-Einstein condensates. We find that the type-I ferrodark soliton has a single width while the type-II ferrodark soliton exhibits two characteristic length scales. The proposed ansatzes show excellent agreement with numerical results. Spin-singlet amplitudes, nematic tensor densities and nematic currents of ferrodark solitons are also discussed. The $\mathbb{Z}_2$ topological defects in the mass superfluid order, dark-dark-dark vector solitons, are obtained exactly in the parameter regime where exact ferrodark solitons exist. The dark-dark-dark vector soliton has higher excitation energy than ferrodark solitons.
