74 citations · 632 across the 33 of their papers we have counts for
3 papers · 1 filter
Numerical Analysis of Dynamical Systems and the Fractal Dimension of Boundaries
L. G. S. Duarte, L. A. C. P. da Mota, H. P. de Oliveira +2
A set of MapleV R.4/5 software routines for calculating the numerical evolution of dynamical systems and flexibly plotting the results is presented. The package consists of an init…
Chaos and a Resonance Mechanism for Structure Formation in Inflationary Models
H. P. de Oliveira, I. Damiao Soares
We exhibit a resonance mechanism of amplification of density perturbations in inflationary mo-dels, using a minimal set of ingredients (an effective cosmological constant, a scalar…
Chaos in Preinflationary Friedmann-Robertson-Walker Universes
G. A. Monerat, H. P. de Oliveira, Ivano D. Soares
The dynamics of a preinflacionary phase of the universe, and its exit to inflation, is discussed. This phase is modeled by a closed Friedmann-Robertson-Walker geometry, the matter…