Determination of nonlinear sigma-omega-rho model parameters in the relativistic mean-field theory by nuclear-matter properties

The parameters of the sigma-omega-rho model in the relativistic mean-field theory with nonlinear a-meson self-interaction are determined by nuclear-matter properties, which are taken as those extracted by fits to data based on nonrelativistic nuclear models. The values of the relevant parameters are C-sigma(2) similar to 94, C-omega(2) similar to 32, C-rho(2) similar to 26, b similar to -0.09, c similar to 1, and the sigma -meson mass m(sigma) similar to 370 MeV, while the value of the calculated nuclear-surface thickness is t similar to 1.4 fm. The field system is shown to be stable, since the sigma -meson self-interaction energy is a lower bound in this whole parameter region with positive c. On the other hand, the effective nucleon mass M* is larger than 0.73M, if the symmetry incompressibility K-s is assumed to be negative and the nuclear-matter incompressibility K-0 is kept less than 300 MeV.Physics, NuclearPhysics, Particles & FieldsSCI(E)4ARTICLE2161-1671