17 citations · 18 across the 3 of their papers we have counts for
5 papers
Introduction to cosmology
J. C. Fabris
This text consists on a series of introductory lectures on cosmology for mathematicians and physicists who are not specialized on the subject.
Semi-Analytical Analysis of Helium Synthesis in Brane Cosmology
J. C. Fabris, J. A. O. Marinho
The problem of primordial nucleosynthesis of helium in brane cosmology is studied using a semi-analytical method, where the Fermi-Dirac statistic is ignored. This semi-analytical m…
Fitting the Supernova Type Ia Data with the Chaplygin Gas
J. C. Fabris, S. V. B. Goncalves, P. E. de Souza
The supernova type Ia observational data are fitted using a model with cold dark matter and the Chaplygin gas. The Chaplygin gas, which is characterized by a negative pressure vary…
Evolution of perturbations in a domain wall cosmology
J. C. Fabris, S. V. B. Goncalves
A fluid of domain walls has an effective equation of state . This equation of state is qualitativelly in agreement with the supernova type Ia observations. We exp…
Gravitational dust collapse with cosmological constant
M. Cissoko, J. C. Fabris, J. Gariel +2
We study the fate of gravitational collapse in presence of a cosmological constant. The junctions conditions between static and non-static space-times are deduced. Three apparent h…