Nucleon effective masses within the Brueckner-Hartree-Fock theory: Impact on stellar neutrino emission

Abstract

We calculate the effective masses of neutrons and protons in dense nuclear matter within the microscopic Brueckner-Hartree-Fock many-body theory and study the impact on the neutrino emissivity processes of neutron stars. We compare results based on different nucleon-nucleon potentials and nuclear three-body forces. Useful parametrizations of the numerical results are given. We find substantial in-medium suppression of the emissivities, strongly dependent on the interactions.

Comments: 5 pages, 3 figures, accepted for publication as Brief Report in Phys. Rev. C