FLUCTUATIONS IN NUCLEAR-DYNAMICS - FROM TRANSPORT-THEORY TO DYNAMIC SIMULATION

Within the semiclassical Nordheim-type transport approach, we develop a method for treating arbitrary fluctuations in one-body dynamics, based on a direct simulation of the stochastic part of the collision integral. The method is illustrated for a uniform two-dimensional torus, for which the time evolution of the mean trajectory and the associated correlation function are calculated; the variance of the phase space occupancy follows closely the predictions of the corresponding Fokker-Planck equation and relaxes towards the appropriate quantum-statistical limit. The spontaneous breaking of the initial symmetries in phase-space makes it possible to employ the method to fluctuation-dominated physical processes, such as nuclear multifragmentation.