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arXiv 1302.5504cond-mat.quant-gas
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赝自旋1/2玻色-爱因斯坦凝聚体中的Skyrmion晶体

Skyrmion crystals in the pseudo-spin-1/2 Bose-Einstein condensates

Cong Zhang, Wenan Guo, Shiping Feng, Shi-Jie Yang

摘要:

用耦合的非线性Gross-Pitaevskii方程描述赝自旋1/2玻色-爱因斯坦凝聚体,并假定种内和种间耦合常数相等,构造了精确的二维解.通过对超精细态的非线性项按空间维数进行重新组合,使方程解耦。这些固定的解决方案形成各种自旋纹理,被确定为skyrmion晶体。在一种特殊情况下,在孤子极限下形成了斯基尔米恩-反斯基尔米恩对晶体。

英文摘要:

Exact two-dimensional solutions are constructed for the pseudo-spin-1/2 Bose-Einstein condensates which are described by the coupled nonlinear Gross-Pitaevskii equations where the intraspecies and interspecies coupling constants are assumed to be equal. The equations are decoupled by means of re-combinations of the nonlinear terms of the hyperfine states according to the spatial dimensions. These stationary solutions form various spin textures which are identified as skyrmion crystals. In a special case, the crystal of skyrmion-antiskyrmion pairs is formed in the soliton limit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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