Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic Properties of Quantized Vortices in Neutron $^3P_2$ Superfluids
  in Neutron Stars   We discuss quantized vortices in neutron $^3P_2$ superfluids, which are
believed to realize in high density neutron matter such as neutron stars. By
using the Ginzburg-Landau free energy for $^3P_2$ superfluids, we determine the
ground state in the absence and presence of the external magnetic field, and
numerically construct $^3P_2$ quantized vortices in the absence and presence of
the external magnetic field along the vortex axis (poloidal) or angular
direction (toroidal). We find in certain situations the spontaneous
magnetization of the vortex core, whose typical magnitude is about $10^{7-8}$
Gauss, but the net magnetic field in a neutron star is negligible because of
the ratio of the vortex core size $\sim 10$fm and the intervortex distance
$\sim 10^{-6}$m in a vortex lattice.

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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol