THERMODYNAMIC BEHAVIOR OF NON-STRANGE BARYONIC MATTER

Within the framework of relativistic mean-field theory we examine effects of the non-strange baryonic resonances on the nuclear equation of state. We assume universal coupling constants to a scalar and vector meson field. Two transcendental equations have to be solved for two unknown parameters, the baryon scalar density and the nucleon chemical potential. We solve the equations numerically using a Newton-Raphson method for two cases: all known non-strange baryon resonances included and, finally, the low-mass baryon resonances and an exponentially growing continuum. We compare our result with those from relativistic ideal gas calculations and also discuss the possibility of forming metastable states, which would provide a stabilizing mechanism for nuclear fireballs. © 1979.