88 citations · 600 across the 68 of their papers we have counts for
8 papers · 1 filter
On the Black Hole Acceleration in the C-metric Space-time
F. L. Carneiro, S. C. Ulhoa, J. W. Maluf
We consider the C-metric as a gravitational field configuration that describes an accelerating black hole in the presence of a semi-infinite cosmic string, along the accelerating d…
Representations of Extended Carroll Group
G. X. A. Petronilo, S. C. Ulhoa, A. E. Santana
Carroll's group is presented as a group of transformations in a 5-dimensional space () obtained by embedding the Euclidean space into a (4; 1)-de Sitter space. Three o…
On Gravitational Stefan-Boltzmann Law and Casimir Effect in FRW Universe
A. F. Santos, S. C. Ulhoa, E. P. Spaniol +1
Both Stefan-Boltzmann law and the Casimir effect, in a universe described by the FRW metric with zero curvature, are calculated. These effects are described by Thermo Field Dynamic…
On the Temperature of Gravitation in the de Sitter Space-Time
A. F. Santos, S. C. Ulhoa, T. F. Furtado +1
The temperature associated with gravitation as presented in the Unruh effect and Hawking temperature serves to link different areas of physics, such as gravity, statistical mechani…
Size-effect at finite temperature in a quark-antiquark effective model in phase space
G. X. A. Petronilo, R. G. G. Amorim, S. C. Ulhoa +3
A quark-antiquark effective model is studied in a toroidal topology at finite temperature. The model is described by a Schrödinger equation with linear potential which is embedded…
Perturbations of the Gravitational Energy in the TEGR: Quasinormal Modes of the Schwarzschild Black Hole
J. W. Maluf, S. C. Ulhoa, F. L. Carneiro +1
We calculate the gravitational energy spectrum of the perturbations of a Schwarzschild black hole described by quasinormal modes, in the framework of the teleparallel equivalent of…