Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin textures in slowly rotating Bose-Einstein Condensates   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.

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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org