Um estudo sobre modelos inflacionários gerados por um campo escalar com potencial polinomial

Abstract

This work analyzed the behavior of an inflationary model driven by a scalar field with a polynomial potential. For that, it was analyzed a monomial potential type and then an investigation of effects due to an introduction of a second potential term, focusing on the parametric sensitivity of the inflationary models, which gives us an indication of how stable is an inflationary model when we do parametric perturbation. Observational parameters related to inflation, such as the spectral index ns of the scalar perturbations and the tensor-scalar ratio r, the slow roll parameters ϵ and δ, among others, were taken into account in this study. Therefore, the proposal is to study the parametric behavior of the model.