14 citations · 39 across the 11 of their papers we have counts for
13 papers
Non-Stationary Wormholes and Matter Source Reconstruction in General Relativity
Geová Alencar, Tiago Crispim, Roberta Dárlla +1
We investigate non-stationary wormhole geometries in General Relativity embedded in evolving cosmological backgrounds. We employ a Simpson-Visser-like regularization of the tempora…
From massless wormholes to massive black bounces: Shadows and multiple light rings
G. Alencar, Kirill A. Bronnikov, T. M. Crispim +2
We develop a general framework for constructing massive black bounce geometries from massless wormhole seeds by introducing a position-dependent mass function while preserving the…
Geometrically Regular Black Object Solutions in Lower-Dimensional Gauss-Bonnet Gravity and Its Unimodular Extension
G. Alencar, T. M. Crispim, C. R. Muniz
We investigate the construction of regular compact objects in the recently proposed lower-dimensional Einstein--Gauss--Bonnet (EGB) gravity obtained through regularized dimensional…
Embedding Wormholes and Dyonic Black Strings in Warped Braneworlds via Local Sum Rules
G. Alencar, T. M. Crispim, Francisco S. N. Lobo
Building on our previous work [1], where the Local Sum Rules (LSR) were established, we investigate the construction of compact objects in Randall-Sundrum braneworlds supported by…
The End of the Road for Bulk Fields in Warped Randall-Sundrum Braneworlds
G. Alencar, R. S. Almeida, R. N. Costa Filho +2
In this manuscript we generalize Ref. [1] and derive a complete set of local consistency conditions for bulk fields in braneworld scenarios with an arbitrary number of dimensions.…
Tidal forces around the Letelier-Alencar cloud of strings black hole
Marcos V. de S. Silva, T. M. Crispim, R. R. Landim +2
In this work, we investigate relativistic tidal forces around a black hole sourced by a cloud of strings, described by the generalized Letelier-Alencar solution. We first review th…
Tidal Stretching and Compression in Black Bounce Backgrounds
T. M. Crispim, Marcos V. de S. Silva, G. Alencar +1
Black bounces are compact objects that combine the structures of regular black holes with those of wormholes. These spacetimes exhibit a rich causal structure and can differ fundam…
Generalized black-bounces solutions in f(R) gravity and their field sources
Marcos V. de S. Silva, T. M. Crispim, G. Alencar +2
In this work, following our recent findings in [1], we extend our analysis to explore the generalization of spherically symmetric and static black-bounce solutions, known from Gene…
Field Sources for Wormholes With Multiple Throats/Anti-throats
T. M. Crispim, Marcos V. de S. Silva, G. Alencar +2
In this work, we investigate wormhole geometries with multiple throats and anti-throats in general relativity. The existence of these structures is identified through the analysis…
A way of decoupling the gravitational bulk field equations of regular braneworld black holes to suppress the bulk singularities
Milko Estrada, T. M. Crispim, G. Alencar
We provide a methodology for decoupling the bulk gravitational field equations of braneworld black holes to suppress the bulk singularities. Thus, we provide a regular braneworld b…
Braneworld Black Bounce to Transversable Wormhole Analytically Connected to an asymptotically Boundary
T. M. Crispim, G. Alencar, Milko Estrada
We extend the recent approach from reference [1] to obtain complete and analytic solutions (both brane and bulk) of a Simpson-Visser (SV) geometry within a braneworld framework. Th…
Braneworld Black Bounce to Transversable Wormhole
Tiago M. Crispim, Milko Estrada, C. R. Muniz +1
We provide a way for embedding a 4-dimensional geometry corresponding to the Simpson Visser (SV) spacetime which is capable of representing a traversable wormhole, a one-way wormho…
New models of d-dimensional black holes without inner horizon and with an integrable singularity
Milko Estrada, G. Alencar, Tiago M. Crispim +1
Theoretically, it has been proposed that objects traveling radially along regular black holes (RBHs) would not be destroyed because of finite tidal forces and the absence of a sing…