4 papers
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 holes in higher-derivative Weyl conformal gravity
Leandro A. Lessa, Caio F. B. Macedo, Manoel M. Ferreira
We obtain exact black hole solutions for static and spherically symmetric sources in a Weyl conformal gauge theory of gravity. We consider a quadratic gravitational action built fr…
On the self-consistency of compact objects in Lorentz-violating gravity theories
Leandro A. Lessa, Renan B. Magalhães, Manoel M. Ferreira Junior
Self-consistent solutions in Lorentz-violating gravity theories require the simultaneous satisfaction of: (i) the corresponding Einstein field equations, (ii) the matter field equa…
Wormholes in Lorentz-violating gravity
Renan B. Magalhães, Leandro A. Lessa, Manoel M. Ferreira
We investigate the possibility of obtaining traversable wormholes supported by phantom scalar fields in Lorentz-violating gravity with an antisymmetric rank-2 tensor with a non-zer…