Neutrino emission due to Cooper-pair recombination in neutron stars revisited

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dc.creatorKolomeitsev, E. E.
dc.creatorVoskresensky, D. N.
dc.date2008-02-11
dc.date.accessioned2026-07-07T11:55:56Z
dc.date.available2026-07-07T11:55:56Z
dc.descriptionNeutrino emission in processes of breaking and formation of neutron and proton Cooper pairs is calculated within the Larkin-Migdal-Leggett approach for a superfluid Fermi liquid. We demonstrate explicitly that the Fermi-liquid renormalization respects the Ward identity and assures the weak vector current conservation. The systematic expansion of the emissivities for small temperatures and nucleon Fermi velocity, v_{F,i}, i=n,p, is performed. Both neutron and proton processes are mainly controlled by the axial-vector current contributions, which are not strongly changed in the superfluid matter. Thus, compared to earlier calculations the total emissivity of processes on neutrons paired in the 1S_0 state is suppressed by a factor ~(0.9-1.2) v_{F,n}^2. A similar suppression factor (~v_{F,p}^2) arises for processes on protons.
dc.description12 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0802.1404
dc.identifierhttp://arxiv.org/abs/0802.1404
dc.identifierPhys.Rev.C77:065808,2008
dc.identifierdoi:10.1103/PhysRevC.77.065808
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205416
dc.subjectNuclear Theory
dc.subjectAstrophysics
dc.subjectSuperconductivity
dc.titleNeutrino emission due to Cooper-pair recombination in neutron stars revisited
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