73 citations · 855 across the 52 of their papers we have counts for
53 papers
Higher derivative Hořava-Lifshitz fermions: from superconductivity to atomic spectroscopy
A. A. Araújo Filho, K. E. L. de Farias, N. Heidari +2
We investigate an isotropic Hořava-Lifshitz fermion theory supplemented by a dimension-six spatial derivative operator, preserving first order time evolution while modifying the ul…
Charged particles and fields in bumblebee gravity: Periodic orbits and superradiance
Marco A. A. de Paula, Renan B. Magalhães, V. B. Bezerra +1
We investigate the dynamics of charged particles and fields in the background of a charged black hole in bumblebee gravity, aiming to better understand the role played by the Loren…
Light bending and observational bounds in dyonic Kalb-Ramond gravity
A. A. Araújo Filho
We investigate the weak and strong gravitational lensing of a dyonic black hole in Kalb-Ramond gravity. After fixing the asymptotic normalization, we distinguish the effective char…
A general static and spherically symmetric black hole in traceless metric-affine bumblebee gravity
A. A. Araújo Filho, N. Heidari, V. B. Bezerra +1
We construct and analyze a general exact static and spherically symmetric black hole solution in traceless metric-affine bumblebee gravity by considering a vacuum expectation value…
Exploring a phantom Dirac-Born-Infeld regular black hole via particle emission, wave scattering and geodesics
N. Heidari, A. A. Araújo Filho, Iarley P. Lobo +1
We examine particle creation, evaporation, scalar wave absorption and scattering, and geodesic motion in the asymptotically flat regular black hole supported by a phantom Dirac-Bor…
Gravitational Wave Signatures from Periodic Orbits around a Non--commutative Schwarzschild Black Hole
N. Heidari, A. A. Araújo Filho, I. P. Lobo +1
In this work, we investigate massive particle motion and the gravitational wave emission generated by periodic trajectories around a non--commutative \textit{Schwarzschild} black h…
Thermodynamic and statistical properties of a multifractional modified dispersion relation via the grand-canonical ensemble
A. A. Araújo Filho
We study the thermodynamic and statistical properties of a gas governed by a multifractional modified dispersion relation of the form , where $E_{…
Gauge-covariant Raychaudhuri dynamics for spin-nondegenerate Lorentz-violating congruences
A. A. Araújo Filho, A. F. Santos, J. A. A. S. Reis +2
We investigate the Raychaudhuri dynamics of charged spin-nondegenerate Lorentz-violating particle congruences under minimal electromagnetic coupling. The coupling is introduced thr…
Gravitational waves in a minimal gravitational SME
A. A. Araújo Filho, N. Heidari, Iarley P. Lobo
In this work, we investigate the generation and propagation of gravitational waves within a minimal gravitational SME (Standard Model Extension). Starting from the modified gravito…
Gravitational waves in metric-affine bumblebee gravity
A. A. Araújo Filho
We study the propagation and emission of gravitational waves in the metric-affine formulation of the bumblebee model, where spontaneous Lorentz symmetry breaking arises from a vect…
Light propagation and gravitational lensing effects in charged Kalb-Ramond spacetime in nonlinear electrodynamics
C. F. S. Pereira, Marcos V. de S. Silva, A. R. Soares +3
In this work, we theoretically investigate the deflection of light for strong- and weak-field regimes in the background of an electrically charged BH described in Kalb-Ramond gravi…
Quantum features of a non-commutative Schwarzschild black hole
A. A. Araújo Filho, I. P. Lobo, P. H. M. Barros +1
This work aims to present the quantum aspects of a non-commutative gauge gravity formulation of a Schwarzschild-like black hole constructed via the Moyal twist $\partial_t \wedge \…
Light propagation and quasinormal modes of a topologically charged Schwarzschild-Klinkhamer wormhole
C. F. S. Pereira, H. Belich, A. R. Soares +3
In this work, we present a theoretical analysis of null geodesics, critical photon orbits, and shadow formation associated with a wormhole generated by a geometric defect. The prop…
Lorentz-violating modifications to particle dynamics, thermodynamics and vacuum energy in bumblebee gravity
A. A. Araújo Filho, K. E. L. de Farias, E. Passos +5
We investigate how spontaneous Lorentz symmetry breaking in bumblebee gravity modifies particle dynamics, thermodynamics, and vacuum energy around a static black hole background. S…
Fermi Acceleration Mechanisms Beyond Lorentz Symmetry
Gilson A. Ferreira, Erick Aguiar, A. A. Araújo Filho +3
We construct models for first- and second-order Fermi acceleration of particles, incorporating generic frame transformations, dispersion relations, and conservation laws. Within th…
Entanglement, equivalence principle, and HBAR entropy, in a new bumblebee black hole
A. A. Araújo Filho, Wentao Liu
We investigate quantum information and thermodynamic properties of a new bumblebee black hole arising from spontaneous Lorentz symmetry breaking by analyzing near-horizon physics t…
Quantum particle production and radiative properties of a new bumblebee black hole
N. Heidari, A. A. Araújo Filho
In this work, we investigate the quantum and radiative properties of a recently proposed static bumblebee black hole arising from a general Lorentz-violating vacuum configuration.…
Neutrino oscillations in a Kalb-Ramond black hole background
Yuxuan Shi, A. A. Araújo Filho, K. E. L. de Farias +2
The analysis examines how neutrinos behave when their trajectories unfold around a black hole sourced by a Kalb-Ramond field, where spontaneous Lorentz symmetry breaking reshapes t…
A Non-Commutative Kalb-Ramond Black Hole
A. A. Araújo Filho, N. Heidari, Iarley P. Lobo
This work presents a new black hole solution within the framework of a non-commutative gauge theory applied to Kalb-Ramond gravity. Using the method recently proposed in the litera…
The role of non-metricity on neutrino behavior in bumblebee gravity
Yuxuan Shi, A. A. Araújo Filho
Within the context of bumblebee gravity, this work explores how non-metricity alters the behavior and propagation of neutrinos. Our analysis is based on the black hole configuratio…
Effects of bumblebee gravity on neutrino motion
Yuxuan Shi, A. A. Araújo Filho
This study explores how the spontaneous violation of Lorentz symmetry -- modeled through a black hole solution in the context of bumblebee gravity -- affects the propagation and dy…
Particle motion and thermal effects around a Kalb-Ramond black hole
A. A. Araújo Filho
This work is devoted to examining particle dynamics and thermodynamic behavior of a black hole in the framework of Kalb-Ramond gravity, framing the investigation through the lens o…
Quantum gravity effects on particle creation and evaporation in a non-commutative black hole via mass deformation
A. A. Araújo Filho, N. Heidari, Ali Övgün
In this work, we explore a gravitational non-commutative black hole by gauging the de Sitter SO(4,1) group and employing the Seiberg-Witten map. Specifically, we examine modificati…
Thermal, topological, and scattering effects of an AdS charged black hole with an antisymmetric tensor background
H. Chen, M. Y. Zhang, A. A. Araújo Filho +2
In this study, we explore a spherically symmetric charged black hole with a cosmological constant under the influence of a Kalb--Ramond field background. We compute the photon sphe…