3 papers
gr-qc2022
Black hole and wormhole solutions in Einstein-Maxwell-Scalar theory
Júlio C. Fabris, Tales A. O. Gomes, Denis C. Rodrigues
We classified and studied the charged black hole and wormhole solutions in the Einstein--Maxwell system in the presence of a massless, real scalar field. The possible existence of…
gr-qc2020
Rastall's theory of gravity: Spherically symmetric solutions and the stability problem
K. A. Bronnikov, Júlio C. Fabris, Oliver F. Piattella +2
We study the stability of static, spherically symmetric solutions of Rastall's theory in the presence of a scalar field with respect to spherically symmetric perturbations. It is s…
gr-qc2019
On the instability of some k-essence space-times
K. A. Bronnikov, J. C. Fabris, Denis C. Rodrigues
We study the stability properties of static, spherically symmetric configurations in k-essence theories with the Lagrangians of the form , . The insta…