论文标题
在列型旋转玻璃凝结物中的量子椭圆涡流
Quantum Elliptic Vortex in a Nematic-Spin Bose-Einstein Condensate
论文作者
论文摘要
我们在理论上发现了一种自旋nematic超流体的新拓扑缺陷。量化的涡流自发打破其轴对称性，导致在列型旋转bose-Einstein冷凝物中具有较小的正二次Zeeman效应。新的涡流被认为是常规涡流的Joukowski变换。当zeeman长度超过旋转愈合长度时，其含量会增长。这种结构是通过平衡流体动力势和连接两个自旋斑的孤子的弹性来维持的，这是可以通过原位磁化成像观察到的。理论分析清楚地定义了自旋-1冷凝物中极性和抗铁磁相的半量子涡度之间的差异。
We find a novel topological defect in a spin-nematic superfluid theoretically. A quantized vortex spontaneously breaks its axisymmetry, leading to an elliptic vortex in nematic-spin Bose-Einstein condensates with small positive quadratic Zeeman effect. The new vortex is considered the Joukowski transform of a conventional vortex. Its oblateness grows when the Zeeman length exceeds the spin healing length. This structure is sustained by balancing the hydrodynamic potential and the elasticity of a soliton connecting two spin spots, which are observable by in situ magnetization imaging. The theoretical analysis clearly defines the difference between half quantum vortices of the polar and antiferromagnetic phases in spin-1 condensates.
