94 citations · 950 across the 111 of their papers we have counts for
113 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…
Deriving Schwarzschild and Kerr from the Einstein Equivalence Principle
G. Alencar
This manuscript demonstrates that the Schwarzschild and Kerr metrics can be derived fundamentally from the Einstein Equivalence Principle (EEP) without explicit reliance on the Ein…
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…
Electrically Charged Non-Abelian Black String in Anti-de Sitter Space
G. Alencar, R. N. Costa Filho, I. Jardim +1
We construct a new family of static, electrically charged, cylindrically symmetric black-string solutions of four-dimensional Einstein--Yang--Mills theory with a negative cosmologi…
Analyzing Quasi-normal modes spectrum in asymptotically de Sitter black bounces and their optical appearance
G. Alencar, Albert Duran-Cabacés, A. Lima +2
This work explores asymptotically de Sitter black-bounce spacetimes, obtained as a regular extension of the Schwarzschild-de Sitter geometry via the Simpson-Visser prescription. Th…
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…