2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40658We consider the dynamics of tensor and scalar gravitational fields in the Relativistic Theory of Gravitation with the Minkowskian vacuum metric and generalize the formulation to the massless graviton. The potential of scalar field is determined in the presence of cosmological term under clear physical motivations. We find cosmological inflationary solutions and analyze conditions providing the transition to the regime of hot expanding universe.23 pages, 3 eps-figures, title extended, arguements added, evolution eqs. unchanged, derivation and treatment of dimensional parameter improvedHigh Energy Physics - PhenomenologyAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext