5 papers
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…
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…
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…
Traversable Wormholes Sourced by Dark Matter in Loop Quantum Cosmology
Marcos V. de S. Silva, G. Alencar, R. N. Costa Filho +2
In this work, we investigate the existence of wormholes within the framework of Loop Quantum Cosmology, using isotropic dark matter as the source. We analyze three distinct density…
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…