Manuel E. Rodrigues

Nov 20, 2024 | epjc.epj.org | Faculdade de Física |Departamento de Física |Manuel E. Rodrigues |Diego Rubiera-Garcia

Eur. Phys. J.

Jul 29, 2024 | link.aps.org | Faculdade de Física |Departamento de Física |Manuel E. Rodrigues |Diego Rubiera-Garcia

In this paper, we investigate the gravitational lensing effect for the Schwarzschild-like black hole space-time in the background of a Kalb-Ramond (KR) field proposed by Yang et al. [Phys. Rev. D 108, 124004 (2023)]. The solution is characterized by a single extra parameter l, which is associated to the Lorentz symmetry breaking induced by the KR field. First, we calculate the exact deflection angle of massive and massless particles for finite distances using elliptic integrals.

Feb 27, 2023 | link.aps.org | Faculdade de Física |Manuel E. Rodrigues

Abstract Black bounces are spacetimes that can describe, depending on certain parameters, black holes or wormholes. In this work, we use a method to obtain the matter content that generates black bounce solutions in general relativity. The method is constructed in a general way, and as models, we apply it to the Simpson-Visser black bounce solution and the Bardeen-type black bounce solution.