Shell-model interaction energies in a relativistic hamiltonian formulation (II)

Abstract

The two-nucleon interaction energies of light and medium nuclei are discussed in a picture of mesonic degrees of freedom and a pure shell model for nucleons. The role of the different mesons in the interaction energies and the domain of the best values of the coupling constants are explored by calculating the mean square deviation between theoretical and experimental two-nucleon interaction energies. Because of the redundancies between different meson contributions to the interaction energies, the values of the coupling constants are not uniquely determined, and rather large domains of best values are obtained. These domains include sets of values of the coupling constants which are compatible with those from other sources. The experimental data can be reproduced with the same quality as in conventional phenomenological potential models by taking the meson fields, σ, π, ρ and ω, and using only vector coupling for the vector fields.