RELATIVISTIC MEAN-FIELD THEORY FOR UNSTABLE NUCLEI WITH NONLINEAR SIGMA-TERM AND OMEGA-TERM

We search for a new parameter set for the description of stable as well as unstable nuclei in the wide mass range within the relativistic mean-field theory. We include a non-linear omega self-coupling term in addition to the non-linear sigma self-coupling terms, the necessity of which is suggested by the relativistic Brueckner-Hartree-Fock (RBHF) theory of nuclear matter. We find two parameter sets, one of which is for nuclei above Z = 20 and the other for nuclei below that. The calculated results agree very well with the existing data for finite nuclei. The parameter set for the heavy nuclei provides the equation of state of nuclear matter similar to the one of the RBHF theory.