320 citations · 3k across the 92 of their papers we have counts for
4 papers · 1 filter
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…
Generalized Chaplygin gas with and the cosmological model
J. C. Fabris, S. V. B. Gonçalves, R. de Sá Ribeiro
The generalized Chaplygin gas model is characterized by the equation of state . It is generally stated that the case is equivalent to a model with cosmo…
Is the semi-classical analysis valid for extreme black holes?
F. G. Alvarenga, A. B. Batista, J. C. Fabris +1
The surface gravity for the extreme Reissner-Nordström black hole is zero suggesting that it has a zero temperature. However, the direct evaluation of the Bogolubov's coefficients,…
Bayesian Analysis of the Chaplygin Gas and Cosmological Constant Models using the SNe Ia Data
R. Colistete, J. C. Fabris, S. V. B. Gonçalves +1
The type Ia supernovae observational data are used to estimate the parameters of a cosmological model with cold dark matter and the Chaplygin gas. The Chaplygin gas model depends e…