3 citations · 3 across the 1 of their papers we have counts for
8 papers
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…
In the Search of Singularity-Free Cosmological Models in Effective Actions
Julio C. Fabris
Fundamental theories, like strings, supergravity, Kaluza-Klein, lead after dimensional reduction and a suitable choice of field configurations, to an effective action in four dimen…
Regularity and stability of electrostatic solutions in Kaluza-Klein theory
M. Azreg-Ainou, G. Clement, C. P. Constantinidis +1
We investigate the family of electrostatic spherically symmetric solutions of the five-dimensional Kaluza-Klein theory. Besides black holes and wormholes, a new class of geodesical…
Vacuum effective action and inflation
J. C. Fabris, A. M. Pelinson, I. L. Shapiro
We consider vacuum quantum effects in the Early Universe, which may lead to inflation. The inflation is a direct consequence of the supposition that, at high energies, all the part…
Gravitational waves in an expanding Universe
J. C. Fabris, S. V. B. Goncalves
We study the tensorial modes of the two-fluid model, where one of this fluids has an equation of state (variable cosmological constant, cosmic string fluid, texture) or…
Cold Scalar-Tensor Black Holes: Causal Structure, Geodesics, Stability
K. A. Bronnikov, G. Clement, C. P. Constantinidis +1
We study the structure and stability of spherically symmetric Brans-Dicke black-hole type solutions with an infinite horizon area and zero Hawking temperature, existing for negativ…