2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28002In off-equilibrium dynamics we define a dynamical correlation length which is proportional to the size of the region in which the atoms move in a correlated way. General arguments indicate that this dynamical correlation length diverges at large times in the glassy phase. Numerical simulations for binary mixtures point toward the correctness of this prediction.4 pages with 4 eps figuresCondensed Mattertext