Parametrization of the relativistic effective interaction in nuclear matter

Abstract

The relativistic G-matrix derived from a modern realistic one-boson exchange potential, is parametrized in terms of an effective meson exchange potential which also accounts for the relativistic degrees of freedom included in the Dirac-Brueckner-Hartree-Fock approach in nuclear matter. The effects of two-body correlations on the relativistic potential are exhibited. Because of its simple form, the resulting effective interaction, which reproduces the saturation properties of nuclear matter in the Hartree-Fock approximation, can easily be used in further investigations of nuclear structure. As a first application, the momentum dependence of the relativistic self-energy and of the effective mass are investigated. It turns out that this momentum dependence is weak.