2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29052We present new simulation results on a hard sphere system at high densities. Using three-time correlations, we can account for the anomalous diffusion, which results from a homogeneous back-dragging effect. Furthermore, we calculate the non-gaussian parameter and connect it to the existence of dynamic heterogeneities.II Workshop on Non-Equilibrium Phenomena in Supercooled Liquids, Pisa, Italy, 26 Sept-2 Oct 1998Soft Condensed Mattertext