Coherence Effects and Neutrino Pair Bremsstrahlung in Neutron Stars

Details Coherence Effects and Neutrino Pair Bremsstrahlung in Neutron Stars Coherence Effects and Neutrino Pair Bremsstrahlung in Neutron Stars

1999-05-19

arxiv.org/abs/nucl-th/9905039v2

Phys.Lett. B463 (1999) 145-152

Physics

Nuclear Physics

Nuclear Theory

11 pages, 2 figures, Latex, uses elsart.sty; minor changes, to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(99)00989-2

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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