3 papers
gr-qc2026
Absorption and quasinormal modes by rotating acoustic black holes in Lorentz-violating background
J. A. V. Campos, M. A. Anacleto, F. A. Brito +2
In this work, we investigate the effects of Lorentz symmetry violation on the absorption cross section and quasinormal modes of a rotating acoustic black hole in (2+1) dimensions,…
astro-ph.CO2026
The dark sector of the Universe as a scalar field in Horndeski Gravity
M. S. Oliveira, F. A. Brito, J. A. V. Campos
In the present work, we study a subclass of Horndeski gravity characterized by a non-minimal derivative coupling between a scalar field and the Einstein tensor, as a possible alter…
gr-qc2025
Intermediate Coupling Regime in Dilatonic Inflationary Universe
Francisco A. Brito, Carlos H. A. B. Borges, Jose A. V. Campos +1
In the present work we study cosmology in dilatonic gravity to address the inflationary phase of the early Universe. As usual, in dilatonic gravity the scalar potential as…