activity
19992026
most citedOn the aether-like Lorentz-breaking actions

157 citations · 3.2k across the 176 of their papers we have counts for

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16 papers · 1 filter

gr-qc2024★ 15 cited

Properties of an axisymmetric Lorentzian non-commutative black hole

A. A. Araújo Filho, J. R. Nascimento, A. Yu. Petrov +2

In this work, we start by examining a spherically symmetric black hole within the framework of non-commutative geometry and apply a modified Newman-Janis method to obtain a new rot…

gr-qc2024

Generalized Chern-Pontryagin models

J. R. Nascimento, A. Yu. Petrov, P. J. Porfírio +1

We formulate a new class of modified gravity models, that is, generalized four-dimensional Chern-Pontryagin models, whose action is characterized by an arbitrary function of the Ri…

gr-qc2024★ 31 cited

Effects of non-commutative geometry on black hole properties

A. A. Araújo Filho, J. R. Nascimento, A. Yu. Petrov +2

In this study, we investigate the signatures of a non-commutative black hole solution. Initially, we calculate the thermodynamic properties of the system, including entropy, heat c…

gr-qc2024★ 8 cited

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…

gr-qc2023★ 9 cited

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…

gr-qc2022★ 73 cited

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…