2 citations · 4 across the 5 of their papers we have counts for
7 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.
Quantum modes around a scalar-tensor black hole: breakdown of the normalization conditions
F. G. Alvarenga, A. B. Batista, J. C. Fabris +1
Black holes arising in the context of scalar-tensor gravity theories, where the scalar field is non-minimally coupled to the curvature term, have zero surface gravity. Hence, it is…
Troubles with quantum anisotropic cosmological models: loss of unitarity
F. G. Alvarenga, A. B. Batista, J. C. Fabris +1
The anisotropic Bianchi I cosmological model coupled with perfect fluid is quantized in the minisuperspace. The perfect fluid is described by using the Schutz formalism which allow…
Zero temperature black holes and the failure of semi-classical analysis
F. G. Alvarenga, A. B. Batista, J. C. Fabris +1
The extreme Reissner-Nordström black holes have zero surface gravity. However, a semi-classical analysis seems to be ill-definite for these objects and apparently no notion of temp…
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…
Singularity-free cosmological solutions in string theories
J. C. Fabris, R. G. Furtado
Singularity-free cosmological solutions may be obtained from the string action at tree level if the dimension of the space-time is greater than 10 and if brane configurations are t…