Topological classification of vortex-core structures of spin-1 Bose-Einstein condensates
Topological classification of vortex-core structures of spin-1 Bose-Einstein condensates
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DOI：
10.1103/physreva.86.023612
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发表时间：
2012-04
影响因子：
2.9
通讯作者：
S. Kobayashi;Y. Kawaguchi;M. Nitta;Masahito Ueda
中科院分区：
文献类型：
--
作者：
S. Kobayashi;Y. Kawaguchi;M. Nitta;Masahito Ueda
我们根据序参数空间的拓扑结构对涡核结构进行了分类。提出了一种表征涡核内部序参量变化的方法。我们将这种方法应用到自旋为1的玻色-爱因斯坦凝聚体，并表明涡核结构是由缠绕数，在核心区域的本地定义的分类。我们还表明，一个涡核结构与非平凡的缠绕数可以稳定下的负二次塞曼效应。
We classify vortex-core structures according to the topology of the order parameter space. By developing a method to characterize how the order parameter changes inside the vortex core. We apply this method to the spin-1 Bose-Einstein condensates and show that the vortex-core structures are classified by winding numbers that are locally defined in the core region. We also show that a vortex-core structure with a nontrivial winding number can be stabilized under a negative quadratic Zeeman effect.