Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-09-13
Eur.Phys.J.A32:97-108,2007
Physics
Nuclear Physics
Nuclear Theory
24 pages, 14 figures; LaTeX, submitted to EPJA
Scientific paper
10.1140/epja/i2006-10356-5
A semi-microscopic self-consistent quantum approach developed recently to describe the inner crust structure of neutron stars within the Wigner-Seitz (WS) method with the explicit inclusion of neutron and proton pairing correlations is further developed. In this approach, the generalized energy functional is used which contains the anomalous term describing the pairing. It is constructed by matching the realistic phenomenological functional by Fayans et al. for describing the nuclear-type cluster in the center of the WS cell with the one calculated microscopically for neutron matter. Previously the anomalous part of the latter was calculated within the BCS approximation. In this work corrections to the BCS theory which are known from the many-body theory of pairing in neutron matter are included into the energy functional in an approximate way. These modifications have a sizable influence on the equilibrium configuration of the inner crust, i.e. on the proton charge Z and the radius R_c of the WS cell. The effects are quite significant in the region where the neutron pairing gap is larger.
Baldo Marcello
Saperstein Eduard
Tolokonnikov S. V.
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