3 papers
gr-qc2025
Braneworlds in Einstein-Scalar-Gauss-Bonnet gravity
José Euclides G. Silva, Leandro A. Lessa, Roberto V. Maluf
We explore the features of a thick braneworld model in five dimensions governed by a Einstein-Gauss-Bonnet gravity with a non-minimal coupling to a dynamical scalar field. We consi…
gr-qc2025
Echoes and quasinormal modes of asymmetric black bounces
Alana C. L. Santos, Leandro A. Lessa, Roberto V. Maluf +1
We study quasinormal modes and echoes of symmetric and asymmetric black bounce solutions generated by anisotropic fluids within the framework of general relativity. We derive the e…
gr-qc2024
On the Structure of Black Bounces Sourced by Anisotropic Fluids
L. A. Lessa, G. J. Olmo
The field equations of static, spherically symmetric geometries generated by anisotropic fluids is investigated with the aim of better understanding the relation between the matter…