We perform a detailed calculation of the pairing properties of the inner crust of a neutron star. We focus on a specific density, and take into account the coexistence of a nuclear lattice with a superfluid gas of neutrons. The Hartree-Fock-Bogoliubov (HFB) equations are solved adding the matrix elements of the direct nucleon-nucleon interaction and those of the interaction induced by medium-polarization effects. The latter are obtained after a detailed calculation of the excited states of the system, within the random phase approximation. It is concluded that for the density considered, polarization processes reduce the pairing gap of about a factor of 2.
Excitation modes and pairing interaction in the inner crust of neutron stars / G. Gori, F. Ramponi, F. Barranco, R. A. Broglia, G. Colo', D. Sarchi, E. Vigezzi. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 731:1-4(2004), pp. 401-408.
Titolo: | Excitation modes and pairing interaction in the inner crust of neutron stars | |
Autori: | GORI, GIORGIO (Primo) RAMPONI, FABIO (Secondo) SARCHI, DAVIDE (Penultimo) | |
Settore Scientifico Disciplinare: | Settore FIS/04 - Fisica Nucleare e Subnucleare | |
Data di pubblicazione: | 2004 | |
Rivista: | ||
Tipologia: | Article (author) | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.nuclphysa.2003.11.052 | |
Appare nelle tipologie: | 01 - Articolo su periodico |