2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105225We discuss the validity and the outcome of a scaling hypothesis proposed by us some years ago, according to which the influence of the density on the slowing down of flow and relaxation in glassforming liquids and polymers is described trough a single effective interaction energy Einf(rho). We stress the formal consequences and the physical meaning of the scaling.invited conference to the 5IDMRCS, Lille july 2005Chemical PhysicsAstrophysicsDisordered Systems and Neural Networkstext