REALISTIC FORCES IN HEAVY-ION COLLISIONS AT INTERMEDIATE ENERGIES

We study the influence of realistic forces based on (Dirac-)Brueckner theory on the dynamics of heavy-ion collisions in the framework of two models; in the relativistic Boltzmann-Uehling-Uhlenbeck approach and in quantum molecular dynamics. These forces are compared to phenomenol ogical forces, either a Skyrme interaction or the nonlinear Walecka mo del. Analysing the rapidity distribution and flow observables for semi central Ca + Ca collisions at 400 A MeV, both models show a strong enh ancement of the flow with realistic forces relative to phenomenologica l forces.