2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35544We establish the main features of homogeneous and isotropic dilaton, metric and Yang-Mills configurations in a cosmological framework. We identify a new energy exchange term between the dilaton and the Yang-Mills field which may lead to a possible solution to the Polonyi problem in 4-dimensional string models.plain Tex, 4 pages. Talk presented at the 7th Marcel Grossman Meeting, July 1994, Stanford, USA, to appear in the proceedingsGeneral Relativity and Quantum Cosmologytext