74 citations · 632 across the 33 of their papers we have counts for
3 papers · 2 filters
Chaotic exit to inflation: pre-inflationary Friedmann-Robertson-Walker universes
G. A. Monerat, H. P. de Oliveira, I. Damiao Soares
We show that homogeneous and isotropic cosmological models with radiation and scalar field have, in general, two possible chaotic exits to inflation. These models may describe the…
Dynamical System Analysis for Inflation with Dissipation
H. P. de Oliveira, Rudnei O. Ramos
We examine the solutions of the equations of motion for an expanding Universe, taking into account the radiation of the inflaton field energy. We then analyze the question of the g…
Chaos in Anisotropic Pre-Inflationary Universes
H. P. de Oliveira, I. Damiao Soares, T. J. Stuchi
We study the dynamics of anisotropic Bianchi type-IX models with matter and cosmological constant. The models can be thought as describing the role of anisotropy in the early stage…