Cenários de inflação inseridos em extensões do modelo padrão de partículas

Abstract

With the development of satellites experiments, the inflationary paradigm has conquered the status of precision physics. Data obtained from cosmic microwave background (CMB) canbe used to vinculate parameters of inflationary models. In this thesis we present our contribuitions to the development of this scenario (1, 2). In particular, we develop a variation of the SU(3)C × SU(3)L ×U(1)N gauge model, proposed originally in (3). This scenario is constructed in a way to address the type-I seesaw and the Peccei-Quin symmetry naturally. Inflation is ruled at high energies by the Φ field, through radiative corrections in the potential. In the following, we develop a model of non-minimal inflation, originally proposed in (2). In this scenario, the neutral component of the ∆ field, triplet by SU(2)L, performs inflation through a non-minimal coupling to gravity. When the inflaton acquires vacuum expected value, mass for the standard neutrinos is generated through type-II seesaw mechanism. When we confront these models with the observed CMB data, we get extremely predictive scenarios, with new signatures on energy scales accessible for future experiments.