97 citations · 663 across the 38 of their papers we have counts for
31 papers · 1 filter
Quasinormal modes for a non-minimally coupled scalar field in a five-dimensional Einstein-power-Maxwell background
Angel Rincon, P. A. Gonzalez, Grigoris Panotopoulos +2
We study the propagation of massless scalar fields non-minimally coupled to gravity in the background of five-dimensional Einstein-power-Maxwell black holes, and using the WKB and…
Phase transitions in four-dimensional AdS black holes with a nonlinear electrodynamics source
Ramon Becar, P. A. Gonzalez, Joel Saavedra +2
In this work we consider black hole solutions to Einstein theory coupled to a nonlinear power-law electromagnetic field with a fixed exponent value. We study the extended phase spa…
Time like geodesics in three-dimensional rotating Hořava AdS black hole
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the motion of particles in the background of a three-dimensional rotating Hořava AdS black hole that corresponds to a Lorentz-violating version of the BTZ black hole and w…
Motion and collision of particles near DST Black holes
P. A. González, Marco Olivares, Yerko Vásquez +2
We consider Deser-Sarioglu-Tekin (DST) black holes as background and we study such the motion of massive particles as the collision of two spinning particles in the vicinity of its…
Perturbative and nonperturbative fermionic quasinormal modes of Einstein-Gauss-Bonnet-AdS black holes
P. A. Gonzalez, Yerko Vasquez, Ruth Noemi Villalobos
In this work, we present the quasinormal modes of a fermionic field in the background of Gauss-Bonnet-AdS black holes. We find exact solutions for at the fixed value $α=R^2/2…
Particle collisions near a three-dimensional warped AdS black hole
Ramón Bécar, P. A. González, Yerko Vásquez
In this paper we consider the warped AdS black hole solution of topologically massive gravity with a negative cosmological constant, and we investigate the possibility that i…
Hawking radiation and propagation of massive charged scalar field on a three-dimensional Gödel black hole
P. A. González, Ali Övgün, Joel Saavedra +1
In this paper we consider the three-dimensional Gödel black hole as a background and we study the vector particle tunneling from this background in order to obtain the Hawking temp…
Bounded orbits for photons as a consequence of extra dimensions
P. A. Gonzalez, Marco Olivares, Yerko Vasquez
In this work, we study the geodesic structure for a geometry described by a spherically symmetric four-dimensional solution embedded in a five-dimensional space known as a brane-ba…
Quasinormal modes of Four Dimensional Topological Nonlinear Charged Lifshitz Black Holes
Ramon Becar, P. A. Gonzalez, Yerko Vasquez
We study scalar perturbations of four dimensional topological nonlinear charged Lifshitz black holes with spherical and plane transverse sections, and we find numerically the quasi…
Motion of particles on a Four-Dimensional Asymptotically AdS Black Hole with Scalar Hair
P. A. Gonzalez, Marco Olivares, Yerko Vasquez
Motivated by black hole solutions with matter fields outside their horizon, we study the effect of these matter fields in the motion of massless and massive particles. We consider…
Greybody Factors of Massive Charged Fermionic Fields in a Charged Two-Dimensional Dilatonic Black Hole
Ramon Becar, P. A. Gonzalez, Joel Saavedra +1
We study massive charged fermionic perturbations in the background of a charged two-dimensional dilatonic black hole, and we solve the Dirac equation analytically. Then, we compute…
Three-Dimensional Hairy Black Holes in Teleparallel Gravity
P. A. González, Joel Saavedra, Yerko Vásquez
We consider three-dimensional gravity based on torsion. Specifically, we consider an extension of the so-called Teleparallel Equivalent of General Relativity in the presence of a s…
Some cosmological models coming from gravitational theories having torsional degrees of freedom
J. Lorca Espiro, Yerko Vásquez
In this work we consider gravitational theories in which the effect of coupling characteristic classes, appropriately introduced as operators in the Einstein-Hilbert action, has be…
Extremal Hairy Black Holes
P. A. Gonzalez, Eleftherios Papantonopoulos, Joel Saavedra +1
We consider a gravitating system consisting of a scalar field minimally coupled to gravity with a self-interacting potential and an U(1) electromagnetic field. Solving the coupled…
Scalar field perturbations of a Lifshitz black hole in conformal gravity in three dimensions
Marcela Catalan, Yerko Vasquez
We study the reflection and transmission coefficients and the absorption cross section for scalar fields in the background of a Lifshitz black hole in three-dimensional conformal g…
Dirac quasinormal modes of two-dimensional charged Dilatonic Black Holes
Ramon Becar, P. A. Gonzalez, Y. Vasquez
We study charged fermionic perturbations in the background of two-dimensional charged Dilatonic black holes, and we present the exact Dirac quasinormal modes. Also, we study the st…
Dirac Quasinormal Modes of New Type Black Holes in New Massive Gravity
P. A. Gonzalez, Yerko Vasquez
We study new type black holes in three-dimensional New Massive Gravity and we calculate analytically the quasinormal modes for fermionic perturbations for some special cases. Then,…
Fermionic greybody factors of two and five-dimensional dilatonic black holes
Ramón Becar, P. A. González, Yerko Vásquez
We study fermionic perturbations in the background of a two and five-dimensional dilatonic black holes. Then, we compute the reflection and transmission coefficients and the absorp…
Quasinormal modes and greybody factors of a four-dimensional Lifshitz black hole with z=0
Marcela Catalan, Eduardo Cisternas, P. A. Gonzalez +1
We study scalar perturbations for a four-dimensional asymptotically Lifshitz black hole in conformal gravity with dynamical exponent z=0, and spherical topology for the transverse…
Dirac quasinormal modes for a 4-dimensional Lifshitz Black Hole
Marcela Catalan, Eduardo Cisternas, P. A. Gonzalez +1
We study the quasinormal modes of fermionic perturbations for an asymptotically Lifshitz black hole in 4-dimensions with dynamical exponent z=2 and plane topology for the transvers…
About the coordinate time for photons in Lifshitz Space-times
J. R. Villanueva, Yerko Vásquez
In this paper we studied the behavior of radial photons from the point of view of the coordinate time in (asymptotically) Lifshitz space-times, and we found a generalization to the…
Four-Dimensional Asymptotically AdS Black Holes with Scalar Hair
P. A. Gonzalez, Eleftherios Papantonopoulos, Joel Saavedra +1
We present a new family of asymptotically AdS four-dimensional black hole solutions with scalar hair of a gravitating system consisting of a scalar field minimally coupled to gravi…
Dirac quasinormal modes of Chern-Simons and BTZ black holes with torsion
Ramon Becar, P. A. Gonzalez, Y. Vasquez
We study Chern-Simons black holes in d-dimensions and we calculate analytically the quasinormal modes of fermionic perturbations. Also, we consider as background the five-dimension…
Motion of particles on a Lifshitz black hole in 3+1 dimensions
Marco Olivares, Yerko Vásquez, J. R. Villanueva +1
We study the geodesic structure of a Lifshitz black hole in 3+1 spacetime dimensions that is an exact solution to the Einstein-scalar-Maxwell theory. We investigate the motio…