Test of the nuclear matter G-matrix interaction in nuclear structure calculations

Abstract

A nuclear matter G-matrix interaction, based on the one-boson exchange model for the nuclear force, has been tested in the description of collective excited states of nuclei. It is explicitly demonstrated that this interaction leads to an instability in heavier nuclei such as ²⁰⁸Pb when used as effective particle-hole interaction within the framework of the random-phase approximation. The necessity to include two-particle—two-hole processes in a consistent way is discussed in a schematic model.