157 citations · 3.3k across the 163 of their papers we have counts for
13 papers · 1 filter
Gravitational lensing by a Lorentz-violating black hole
A. A. Araújo Filho, J. R. Nascimento, A. Yu. Petrov +1
In this work, we study the gravitational lensing by a Lorentz-violating (LV) black hole inspired by the recent contribution [1]. Explicitly, we concentrate on a specific applicatio…
Gödel-type solutions within the gravity
J. R. Nascimento, A. Yu. Petrov, P. J. Porfirio +1
In this work, we scrutinize the consistency of spacetime homogeneous Gödel-type metrics within theories of gravity for well-motivated matter sources. As it is well known…
Vacuum solution within a metric-affine bumblebee gravity
A. A. Araújo Filho, J. R. Nascimento, A. Yu. Petrov +1
We consider a metric-affine extension to the gravitational sector of the Standard-Model Extension for the Lorentz-violating coefficients and . The general results, whic…
Induced gravitational topological term and the Einstein-Cartan modified theory
J. R. Nascimento, A. Yu. Petrov, P. J. Porfírio
It is well known that only the axial piece of the torsion couples minimally to fermions in a Riemann-Cartan geometry, while the other ones decouple. In this paper, we consider the…
On plane wave solutions in Lorentz-violating extensions of gravity
J. R. Nascimento, A. Yu. Petrov, A. R. Vieira
In this paper, we obtain dispersion relations corresponding to plane wave solutions in various Lorentz-breaking extensions of gravity with dimensions 3, 4, 5 and 6. We demonstrate…
First-order perturbations of Gödel-type metrics in non-dynamical Chern-Simons modified gravity
B. Altschul, J. R. Nascimento, A. Yu. Petrov +1
Gödel-type metrics that are homogeneous in both space and time remain, like the Schwarzschild metric, consistent within Chern-Simons modified gravity; this is true in both the non-…