38 citations · 59 across the 10 of their papers we have counts for
10 papers
Thin-Shell Black Bounce
Leandro A. Lessa, Renan B. Magalhães, Gonzalo J. Olmo
A recently proposed class of black-bounce solutions sourced by anisotropic fluids, whose exterior reproduces the Reissner-Nordström geometry all the way down to a minimal-area boun…
Shadows and gravitational perturbations of black bounces
Alana C. L. Santos, Leandro A. Lessa, Roberto V. Maluf +1
We investigate axial gravitational perturbations and shadow formation in black-bounce geometries supported by anisotropic fluids within general relativity. Two distinct classes of…
Non-minimal matter sector couplings in Lorentz-violating gravity: Self-consistent traversable wormholes and quasinormal modes
Renan B. Magalhães, Leandro A. Lessa, Rodolfo Casana
The anisotropies induced by Lorentz-violating fields pose significant challenges for the search for compact objects in non-vacuum environments. In this work, nevertheless, we demon…
Black string solutions in Lifshitz spacetime
L. A. Lessa, J. E. G. Silva, J. Furtado
In this paper we study black string solutions considering the Lifshitz anisotropic scaling. We have shown that a new class of asymptotically Lifshitz solutions can be generated by…
Braneworlds in Warped Einsteinian Cubic Gravity
L. A. Lessa, R. V. Maluf, J. E. G. Silva +1
Einstenian cubic gravity (ECG) is a modified theory of gravity constructed with cubic contractions of the curvature tensor. This theory has the remarkable feature of having the sam…
Einstein-Bumblebee-Dilaton black hole in Lifshitz spacetimes
L. A. Lessa, J. E. G. Silva
We investigate the critical behavior of Lifshitz black holes in Einstein-dilaton gravity in the context of spontaneous Lorentz symmetry breaking. Considering the effects of both th…
Einstein-Bumblebee-Dilaton black hole solution
L. A. Lessa, J. E. G. Silva
We obtain new black hole solutions in a Einstein-Bumblebee-scalar theory. By starting with a Einstein-Bumblebee theory in D + d dimensions, the scalar dilaton field and its interac…
Regular black holes in Einstein cubic gravity
L. A. Lessa, J. E. G. Silva
We investigate the effects of the Einstein cubic gravity (ECG) on regular black hole solutions driven by nonlinear electrodynamics (NLE) sources. The ECG tends to form a naked sing…
The bumblebee field excitations in a cosmological braneworld
L. A. Lessa, J. E. G. Silva, C. A. S. Almeida
We investigated the effects of the spacetime curvature and extra dimensions on the excitations of a self-interacting vector field known as the bumblebee field. The self-interacting…
Traversable wormhole solution with a background Kalb-Ramond field
L. A. Lessa, R. Oliveira, J. E. G. Silva +1
We obtain a static spherically symmetric wormhole solution due to the vacuum expectation value (VEV) of a Kalb-Ramond field. The Kalb-Ramond VEV is a background tensor field which…