Monday, February 25, 2013

1302.5504 (Cong Zhang et al.)

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

Cong Zhang, Wenan Guo, Shiping Feng, Shi-Jie Yang
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.
View original: http://arxiv.org/abs/1302.5504

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