HYBRID ENSEMBLE METHOD FOR THE UU COLLISION TERM

International audienceWe present an efficient way to evaluate the Ühling–Uhlenbeck (UU) collision term in the case of semi-classical dynamics. We focus on finite fermionic systems such as small metal clusters, which we recently pointed out the importance of the UU collision term for the electronic dynamics. We show, how far the hybrid method, which lies between the full and the parallel ensemble methods, allows an efficient and accurate treatment of a Boltzmann–like collision term. We finally give a guideline to define the best parameter of the hybrid ensemble method for a given cluster size