53 citations · 292 across the 34 of their papers we have counts for
5 papers · 1 filter
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…
Chaotic exit to inflation: the dynamics of pre-inflationary universes
H. P. de Oliveira, I. Damiao Soares, T. J. Stuchi
We show that anisotropic Bianchi type-IX models, with matter and cosmological constant have chaotic dynamics, connected to the presence of a saddle-center in phase space. The topol…
Gravitational Wave Emission and Mass Extraction from a Perturbed Schwarzschild Black Hole (continue)
M. C. Lima, I. Damião Soares
A relativistic model for the emission of gravitational waves from an initially unperturbed Schwarzschild black hole, or spherical collapsing configuration, is completely integrated…
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…
Topology Change in Canonical Quantum Cosmology
Vitorio A. De Lorenci, Jerome Martin, Nelson Pinto-Neto +1
We develop the canonical quantization of a midisuperspace model which contains, as a subspace, a minisuperspace constituted of a Friedman-Lema\^ıtre-Robertson-Walker Universe fille…