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Neutrino emission due to Cooper-pair recombination in neutron stars reexamined
Title Neutrino emission due to Cooper-pair recombination in neutron stars reexamined Author info Evgeni E. Kolomeitsev, D. N. Voskresensky Author Kolomeitsev Evgeni E. 1970- (50%) UMBFP06 - Katedra fyziky
Co-authors Voskresensky Dmitri (50%)
Source document Physical Review C. Vol. 77, no. 6 (2008), pp. [1-12]. - Maryland : American Physical Society, 2008 Keywords fyzika - physics jadrová fyzika nuclear physics particles Language English Country United States of America systematics 539.1 Annotation Neutrino 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 ensures 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 of similar or equal to(0.9-1.2)v(F,n)(2). A similar suppression factor (similar to v(F,p)(2)) arises for processes on protons. Public work category ADC No. of Archival Copy 26699 Repercussion category KELLER, Jochen - SEDRAKIAN, Armen. Response functions of cold neutron matter : density, spin, and current fluctuations. In Physical review C. ISSN 0556-2813, 2013, vol. 87, no. 4, art. no. 045804.
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