487 citations · 3.8k across the 40 of their papers we have counts for
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On Schwarzschild black hole singularity formation
Jorge Ovalle, Roberto Casadio, Alexander Kamenshchik
We examine whether the Schwarzschild black hole can emerge as the continuous end state of gravitational collapse from a non-singular configuration. Employing a time dependent exten…
Cosmology from Schwarzschild black hole revisited
Roberto Casadio, Alexander Kamenshchik, Jorge Ovalle
We study cosmological models based on the interior of the revisited Schwarzschild black hole recently reported in [Phys.~Rev.~D{\bf 109} (2024) 104032]. We find that these solution…
From black hole mimickers to black holes
Roberto Casadio, Alexander Kamenshchik, Jorge Ovalle
We present a simple analytical model for studying the collapse of an ultracompact stellar object (regular black hole mimicker with infinite redshift surface) to form a (integrable)…
Black holes without Cauchy horizons and integrable singularities
Jorge Ovalle
In general relativity, nonsingular black holes contain (at least) a Cauchy horizon, a null hypersurface beyond which determinism breaks down. Even though the strong cosmic censorsh…
Regular hairy black holes through Minkowski deformation
Jorge Ovalle, Roberto Casadio, Andrea Giusti
Static and stationary regular black holes are examined under a minimal set of requirements consisting of (i) the existence of a well defined event horizon and (ii) the weak energy…
Quantum rotating black holes
Roberto Casadio, Andrea Giusti, Jorge Ovalle
We consider black holes generically sourced by quantum matter described by regular wavefunctions. This allows for integrable effective energy densities and the removal of Cauchy ho…
Quantum Reissner-Nordström geometry: singularity and Cauchy horizon
R. Casadio, A. Giusti, J. Ovalle
We present a quantum description of electrically charged spherically symmetric black holes given by coherent states of gravitons in which both the central singularity and the Cauch…
Energy exchange between relativistic fluids: the polytropic case
J. Ovalle, E. Contreras, Z. Stuchlik
We present a simple, analytic and straightforward method to elucidate the effects produced by polytropic fluids on any other gravitational source, no matter its nature, for static…
Warped vacuum energy by black holes
J. Ovalle
The belief still persists, at least for an important part of the community, that in general relativity the cosmological constant must remain immaculate. However, Bianchi identi…
Kerr-de Sitter Black Hole Revisited
J. Ovalle, E. Contreras, Z. Stuchlik
We interpret the cosmological constant as the energy of the vacuum, and under a minimum amount of assumptions, we show that it is deformed in the vicinity of a black hole. This lea…
Gravitational decoupling for axially symmetric systems and rotating black holes
E. Contreras, J. Ovalle, R. Casadio
We introduce a systematic and direct procedure to generate hairy rotating black holes by deforming a spherically symmetric seed solution. We develop our analysis in the context of…
Hairy black holes by gravitational decoupling
J. Ovalle, R. Casadio, E. Contreras +1
Black holes with hair represented by generic fields surrounding the central source of the vacuum Schwarzschild metric are examined under the minimal set of requirements consisting…
Isotropization and change of complexity by gravitational decoupling
R. Casadio, E. Contreras, J. Ovalle +2
We employ the gravitational decoupling approach for static and spherically symmetric systems to develop a simple and powerful method in order to a) continuously isotropize any anis…
Anisotropic ultracompact Schwarzschild star by gravitational decoupling
J. Ovalle, C. Posada, Z. Stuchlík
We employ the minimal geometric deformation approach to gravitational decoupling (MGD-decoupling) in order to generate an exact anisotropic and non-uniform version of the ultracomp…
A causal Schwarzschild-de Sitter interior solution by gravitational decoupling
L. Gabbanelli, J. Ovalle, A. Sotomayor +2
We employ the minimal geometric deformation approach to gravitational decoupling (MGD- decoupling) in order to build an exact anisotropic version of the Schwarzschild interior solu…
Einstein-Klein-Gordon by gravitational decoupling
J Ovalle, R Casadio, R da Rocha +2
We investigate how a spherically symmetric scalar field can modify the Schwarzschild vacuum solution when there is no exchange of energy-momentum between the scalar field and the c…
A simple method to generate exact physically acceptable anisotropic solutions in general relativity
J Ovalle, A Sotomayor
By using the gravitational decoupling through the minimal geometric deformation approach (MGD-decoupling), we show a simple and powerful method to generate physically acceptable ex…
Anisotropic solutions by gravitational decoupling
J Ovalle, R Casadio, R da Rocha +1
We investigate the extension of isotropic interior solutions for static self-gravitating systems to include the effects of anisotropic spherically symmetric gravitational sources b…
Decoupling gravitational sources in general relativity: from perfect to anisotropic fluids
Jorge Ovalle
We show the first simple, systematic and direct approach to decoupling gravitational sources in general relativity. As a direct application, a robust and simple way to generate ani…
Searching for modified gravity: a conformal sector?
J Ovalle, R Casadio, A Sotomayor
We conjecture that any modification of general relativity can be studied by the minimal geometric deformation approach provided that such modification can be represented by a trace…
The Minimal Geometric Deformation Approach: a brief introduction
J Ovalle, R Casadio, A Sotomayor
We review the basic elements of the Minimal Geometric Deformation approach in details. This method has been successfully used to generate brane-world configurations from general re…
The Minimal Geometric Deformation Approach Extended
Roberto Casadio, Jorge Ovalle, Roldao da Rocha
The minimal geometric deformation approach was introduced in order to study the exterior space-time around spherically symmetric self-gravitating systems, like stars or similar ast…
Classical Tests of General Relativity: Brane-World Sun from Minimal Geometric Deformation
Roberto Casadio, Jorge Ovalle, Roldao da Rocha
We consider a solution of the effective four-dimensional brane-world equations, obtained from the General Relativistic Schwarzschild metric via the principle of Minimal Geometric D…
Brane-world stars with solid crust and vacuum exterior
Jorge Ovalle, László Á. Gergely, Roberto Casadio
The minimal geometric deformation approach is employed to show the existence of brane-world stellar distributions with vacuum Schwarzschild exterior, thus without energy leaking fr…