1.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Consejo Nacional de Investigaciones Científicas y TécnicasAR395 papers
- Centre National de la Recherche ScientifiqueFR376 papers
- University of ArizonaUS368 papers
- Pontificia Universidad Católica de ChileCL356 papers
- The University of Texas at AustinUS355 papers
- Universidad Nacional de La PlataAR354 papers
- Universidad Andrés BelloCL353 papers
- Universidade de São PauloBR347 papers
- University of BolognaIT343 papers
- University of CambridgeGB330 papers
- University of GenevaCH329 papers
- University of MichiganUS327 papers
55 papers · 1 filter
Massive scalar field perturbations of 4D de Sitter Einstein-Gauss-Bonnet black holes
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We investigate the propagation of massive scalar fields in the background of four-dimensional Einstein-Gauss-Bonnet black holes with de Sitter (dS) asymptotics. Our study focuses o…
Black hole with global monopole charge in self-interacting Kalb-Ramond field
Mohsen Fathi, Ali Övgün
In this study, we explore a static, spherically symmetric black hole solution in the context of a self-interacting Kalb-Ramond field coupled with a global monopole. By incorporatin…
Quasinormal modes of massive scalar fields in four-dimensional wormholes: anomalous decay rate
P. A. González, Eleftherios Papantonopoulos, Ángel Rincón +1
In this work we consider a Generalized Bronnikov-Ellis wormhole and the tideless Morris-Thorne wormhole and we study the propagation of massive scalar fields. We calculate the quas…
Extreme Dilaton Black Holes in 2 +1 Dimensions: Quasinormal modes
Sharmanthie Fernando, P. A. González, Yerko Vásquez
We study neutral massless scalar field perturbations around an extreme dilaton black hole in 2 +1 dimensions: the wave equations of the massless scalar field is shown to be exactly…
Lorentz symmetries and primary constraints in covariant teleparallel gravity
Alexey Golovnev, Maria-Jose Guzman
In this article we explore local Lorentz transformations in theories of gravity based on the teleparallel formalism. For the teleparallel equivalent of general relativity (TEGR), t…
Black Holes in Gravity: Exact and Perturbed Solutions
Sebastian Bahamonde, Alexey Golovnev, María-José Guzmán +2
Spherically symmetric solutions of theories of gravity built one fundamental class of solutions to describe compact objects like black holes and stars. Moreover, they serve as star…
Superradiant instability and charged scalar quasinormal modes for -dimensional Coulomb-like AdS black holes from nonlinear electrodynamics
P. A. González, Ángel Rincón, Joel Saavedra +1
We study the propagation of charged scalar fields in the background of -dimensional Coulomb-like AdS black holes, and we show that such propagation is unstable under Dirichlet…
Scalar quasinormal modes for 2+1-dimensional Coulomb like AdS black holes from non lineal electrodynamics
Almendra Aragón, P. A. González, Joel Saavedra +1
We study the propagation of scalar fields in the background of -dimensional Coulomb like AdS black holes, and we show that such propagation is stable under Dirichlet boundary…
Approaches to spherically symmetric solutions in f(T) gravity
Alexey Golovnev, Maria-Jose Guzman
We study properties of static spherically symmetric solutions in gravity. Based on our previous work on generalising Bianchi identities for this kind of theories, we…
Non-trivial Minkowski backgrounds in f(T) gravity
Alexey Golovnev, Maria-Jose Guzman
Boosted and rotated tetrad backgrounds for the Minkowski space are studied in gravity. We perform Lorentzian perturbations at first order around non-trivial backgrounds 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…
Foundational issues in f(T) gravity theory
Alexey Golovnev, María-José Guzmán
We give a short review on the status of research on the theoretical foundations of gravity theories. We discuss recent results on perturbative and non-perturbative approache…
Review of the Hamiltonian analysis in teleparallel gravity
Daniel Blixt, María-José Guzmán, Manuel Hohmann +1
We review different approaches to the Hamiltonian analysis of teleparallel theories of gravity. In particular the Hamiltonian analysis for theories led to disputed…
Thermodynamics of 2+1 dimensional Coulomb-Like Black Holes from Non Linear Electrodynamics with a traceless energy momentum tensor
Mauricio Cataldo, P. A. González, Joel Saavedra +2
In this work we study thermodynamics of 2+1-dimensional static black holes with a nonlinear electric field. Besides employing the standard thermodynamic approach, we investigate th…
Null geodesics in five-dimensional Reissner-Nordström anti-de Sitter black hole
P. A. González, Marco Olivares, Yerko Vásquez +1
The study of the motion of photons around massive bodies is one of the most useful tools to know the geodesic structure associated with said gravitational source. In the present wo…
Classification of primary constraints for new general relativity in the premetric approach
Maria-Jose Guzman, Shymaa Khaled Ibraheem
We introduce a novel procedure for studying the Hamiltonian formalism of new general relativity (NGR) based on the mathematical properties encoded in the constitutive tensor define…
Massive Dirac quasinormal modes in Schwarzschild-dS black holes: anomalous decay rate and fine structure
Almendra Aragón, Ramón Bécar, P. A. González +1
Recently, the anomalous decay rate of quasinormal modes has been studied for some geometries under scalar field perturbations, which occurs when the longest-lived modes are the one…
Bianchi identities in f(T) gravity: paving the way to confrontation with astrophysics
Alexey Golovnev, Maria-Jose Guzman
Theories of gravity are being actively confronted with cosmological observations, and are being studied for their potential to solve famous problems of cosmology. A necessar…
Quasinormal modes and their anomalous behavior for black holes in gravity
Almendra Aragón, P. A. González, Eleftherios Papantonopoulos +1
We study the propagation of scalar fields in the background of an asymptotically de-Sitter black hole solution in gravity. The aim of this work is to analyze in modified the…
Collision of particles near a three-dimensional rotating Hořava AdS black hole
Ramón Bécar, P. A. González, Yerko Vásquez
We consider a three-dimensional rotating Hořava AdS black hole, that corresponds to a Lorentz-violating version of the BTZ black hole and we analyze the effect of the breaking of L…
Constraints on Scalar-Tensor Theory of Gravity by Solar System Tests
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the motion of particles in the background of a scalar-tensor theory of gravity in which the scalar field is kinetically coupled to Einstein tensor. We constrain the value…
Disformal transformations in modified teleparallel gravity
Alexey Golovnev, Maria Jose Guzman
In this work, we explore disformal transformations in the context of the teleparallel equivalent of general relativity and modified teleparallel gravity. We present explicit formul…
Pseudoinvariance and the extra degree of freedom in f(T) gravity
Rafael Ferraro, María José Guzmán
Nonlinear generalizations of teleparallel gravity entail the modification of a Lagrangian that is pseudoinvariant under local Lorentz transformations of the tetrad field. This proc…
Degrees of freedom and Hamiltonian formalism for gravity
María José Guzmán, Rafael Ferraro
The existence of an extra degree of freedom (d.o.f.) in gravity has been recently proved by means of the Dirac formalism for constrained Hamiltonian systems. We will show a…