Spin textures in slowly rotating Bose-Einstein Condensates

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 $\pi$-disclinations in the nematic order parameter which arises from spin fluctuations. For experimentally relevant parameters, the cores of these $\pi$-disclinations are ferromagnetic, and can be imaged with polarized light.

14 pages, 12 low resolution bitmapped figures, RevTeX4. High resolution figures available from author. Suplementary movies available from author

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• Stability and internal structure of vortices in spin-1 Bose-Einstein condensates with conserved magnetization
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• Magnetically Stabilized Nematic Order I: Three-Dimensional Bipartite Optical Lattices
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• Pairing, Ferromagnetism, and Condensation of a normal spin-1 Bose gas
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• Spin-Nematic Vortex States in Cold Atoms
• Vortex-lattice melting in a one-dimensional optical lattice
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• Decay of an isolated monopole into a Dirac monopole configuration
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