Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Role of nucleonic Fermi surface depletion in neutron star cooling   The Fermi surface depletion of beta-stable nuclear matter is calculated to
study its effects on several physical properties which determine the neutron
star thermal evolution. The neutron and proton Z factors measuring the
corresponding Fermi surface depletions, are calculated within the
Brueckner-Hartree-Fock approach employing the AV18 two-body force supplemented
by a microscopic three body force. Neutrino emissivity, heat capacity and, in
particular, neutron 3PF2 superfluidity turn out to be reduced, especially at
high baryonic density, to such an extent that the cooling rates of young
neutron stars are significantly slowed

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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin