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8 papers · 2 filters
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…
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…
Braneworld solutions for modified theories of gravity with non-constant curvature
D. Bazeia, A. S. Lobao, L. Losano +2
We study braneworld models in the presence of scalar field in a five-dimensional geometry with a single extra dimension of infinite extent, with gravity modified to include a funct…