2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34373We discuss the implication of the introduction of an extra field to the dynamics of a scalar field conformally coupled to gravitation in a homogeneous isotropic spatially flat universe. We show that for some reasonable parameter values the dynamical effects are similar to those of our previous model with a single scalar field. Nevertheless for other parameter values new dynamical effects are obtained.General Relativity and Quantum Cosmologytext