Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coherence Effects and Neutrino Pair Bremsstrahlung in Neutron Stars   We calculate the rate of energy radiation by bremsstrahlung of neutrino pairs
by baryons in neutron stars employing a transport model in which neutrinos
couple to baryons with spectral width. The coherence effects, which are
included by computing the self energies with fully dressed propagators, lead to
the Landau-Pomeranchuk-Migdal suppression of the neutrino emission rates in the
soft neutrino and high temperature limit. A microscopic evaluation of the
bremsstrahlung rate by neutrons is carried out using the Brueckner theory of
nuclear matter at finite temperatures.

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The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
7
The categories of this paper are: hep-th