10 papers
Horizon formation from effective matter profiles in static spacetimes
Pablo León, G. Alencar, Manuel Gonzalez-Espinoza +1
The formation of event horizons is traditionally studied as the endpoint of gravitational collapse, where the matter distribution and the spacetime geometry are evolved simultaneou…
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…
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…
Dymnikova Black Holes in Unimodular Gravity: Maxwell Sources and Vacuum Contributions
G. Alencar, V. H. U. Borralho
In this work, we investigate the Dymnikova regular black hole within the framework of unimodular gravity, emphasizing the role of the effective vacuum sector in the regularization…
Regular Black Strings and BTZ Black Hole in Unimodular Gravity Supported by Maxwell Fields
G. Alencar, V. H. U. Borralho
In this work, we obtain a Maxwell source for regular black string and BTZ black hole using the framework of unimodular gravity. This type of alternative to general relativity impos…
Black bounce as a quantum correction from string T-duality: Thermodynamics, energy conditions, and observational imprints from EHT
G. Alencar, T. M. Crispim, Diego Sáez-Chillón Gómez +1
Motivated by quantum gravity effects suggested by string theory, we investigate gravitational configurations sourced by an effective energy density inspired by T-duality. This dens…