Relativistic mean-field parametrization of effective interaction in nuclear matter

Abstract

The results of the modern relativistic Dirac-Brueckner calculations of nuclear matter are parametrized in terms of the relativisticσ- Ω mean-field theory with scalar and vector nonlinear selfinteractions. It is shown that the inclusion of the isoscalar vector-meson quartic selfinteraction is essential for obtaining a proper density dependence of the vector potential in the mean-field model. The obtained mean-field parameters represent a simple parametrization of effective interaction in nuclear matter. This interaction may be used in the mean-field studies of the structure of finite nuclei without the introduction of additional free parameters.