2 citations · 2 across the 4 of their papers we have counts for
4 papers
The effects of dark energy on the early universe with radiation and Bose-Einstein condensate
G. A. Monerat, F. G. Alvarenga, S. V. B. Gonçalves +4
This work analyzes the effects of quantization on a Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) model with positive curvature and material content composed of a Bose-Einstein cond…
Observational constraints of the Gravitational Waves in the Brans-Dicke Theory
R. C. Freitas, S. V. B. Gonçalves
We investigate the quantum origin of the primordial cosmological gravitational waves in the Brans-Dicke theory. We compute the number of gravitons produced during inflation a…
Modeling the spectrum of gravitational waves in the primordial Universe
M. S. Santos, S. V. B. Gonçalves, J. C. Fabris +1
Recent observations from type Ia Supernovae and from cosmic microwave background (CMB) anisotropies have revealed that most of the matter of the Universe interacts in a repulsive m…
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…