NONEQUILIBRIUM APPROACH TO DENSE HADRONIC MATTER

A general approach to the kinetics of a hadronic many-particle system is formulated employing a nonequilibrium diagram technique. The invest igation of medium effects is based on the analysis of the coupled set of nonequilibrium Dyson equations for the pi, N, and Delta components. Some model approaches to their solution are considered. The results a re applied to the study of expanding hadronic fireballs containing pio ns, nucleons, and deltas as produced in the course of heavy-ion collis ions at energies provided by the GSI-SIS up to the CERN-SpS.