362 citations · 5.2k across the 125 of their papers we have counts for
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Wormholes and nonsingular space-times in Palatini gravity
Cosimo Bambi, Alejandro Cardenas-Avendano, Gonzalo J. Olmo +1
We reconsider the problem of theories of gravity coupled to Born-Infeld theory of electrodynamics formulated in a Palatini approach, where metric and connection are independ…
Robustness of braneworld scenarios against tensorial perturbations
D. Bazeia, L. Losano, R. Menezes +2
Inspired by the peculiarities of the effective geometry of crystalline structures, we reconsider thick brane scenarios from a metric-affine perspective. We show that for a rather g…
Nonsingular Black Holes in Theories
Gonzalo J. Olmo, D. Rubiera-Garcia
We study the structure of a family of static, spherically symmetric space-times generated by an anisotropic fluid and governed by a particular type of theory. We find that f…
Geodesic completeness in a wormhole spacetime with horizons
Gonzalo J. Olmo, D. Rubiera-Garcia, A. Sanchez-Puente
The geometry of a spacetime containing a wormhole generated by a spherically symmetric electric field is investigated in detail. These solutions arise in high-energy extensions of…
Modified gravity in three dimensional metric-affine scenarios
Cosimo Bambi, M. Ghasemi-Nodehi, D. Rubiera-Garcia
We consider metric-affine scenarios where a modified gravitational action is sourced by electrovacuum fields in a three dimensional space-time. Such scenarios are supported by the…
The quantum, the geon, and the crystal
Gonzalo J. Olmo, D. Rubiera-Garcia
Effective geometries arising from a hypothetical discrete structure of space-time can play an important role in the understanding of the gravitational physics beyond General Relati…
Classical resolution of black hole singularities in arbitrary dimension
D. Bazeia, L. Losano, Gonzalo J. Olmo +2
A metric-affine approach is employed to study higher-dimensional modified gravity theories involving different powers and contractions of the Ricci tensor. It is shown that the fie…
Geometric aspects of charged black holes in Palatini theories
Gonzalo J. Olmo, D. Rubiera-Garcia, A. Sanchez-Puente
Charged black holes in gravity theories in the Palatini formalism present a number of unique properties. Their innermost structure is topologically nontrivial, representing a wormh…
Non-Riemannian geometry: towards new avenues for the physics of modified gravity
Gonzalo J. Olmo, D. Rubiera-Garcia
Less explored than their metric (Riemannian) counterparts, metric-affine (or Palatini) theories bring an unexpected phenomenology for gravitational physics beyond General Relativit…
Melvin Universe in Born-Infeld gravity
Cosimo Bambi, Gonzalo J. Olmo, D. Rubiera-Garcia
We consider a magnetic flux pointing in the direction of an axially symmetric space-time (Melvin Universe) in a Born-Infeld-type extension of General Relativity (GR) formulated…
Classical resolution of black hole singularities via wormholes
Gonzalo J. Olmo, D. Rubiera-Garcia, A. Sanchez-Puente
In certain extensions of General Relativity, wormholes generated by spherically symmetric electric fields can resolve black hole singularities without necessarily removing curvatur…
Gauss-Bonnet black holes supported by a nonlinear electromagnetic field
D. Rubiera-Garcia
We study -dimensional charged static spherically symmetric black hole solutions in Gauss-Bonnet theory coupled to nonlinear electrodynamics defined as arbitrary functions of the…