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Spin textures in slowly rotating Bose-Einstein Condensates

Erich J. Mueller
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Abstract

Slowly rotating spin-1 Bose-Einstein condensates are studied through a variational approach based upon lowest Landau level calculus. The author finds that in a gas with ferromagnetic interactions, such as $^{87}$Rb, angular momentum is predominantly carried by clusters of two different types of skyrmion textures in the spin-vector order parameter. Conversely, in a gas with antiferromagnetic interactions, such as $^{23}$Na, angular momentum is carried by $π$-disclinations in the nematic order parameter which arises from spin fluctuations. For experimentally relevant parameters, the cores of these $π$-disclinations are ferromagnetic, and can be imaged with polarized light.

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Erich J. Mueller. 2003-09-22. Spin textures in slowly rotating Bose-Einstein Condensates. https://doi.org/10.1103/physreva.69.033606

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