129 citations · 543 across the 15 of their papers we have counts for
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New scalar compact objects in Ricci-based gravity theories
Victor I. Afonso, Gonzalo J. Olmo, Emanuele Orazi +1
Taking advantage of a previously developed method, which allows to map solutions of General Relativity into a broad family of theories of gravity based on the Ricci tensor (Ricci-b…
Geometric Aspects of the `Deformation Method'
Victor I. Afonso, Diego J. Cirilo-Lombardo
At the classical level, redefinitions of the field content of a Lagrangian allow to rewrite an interacting model on a flat target space, in the form of a free field model (no poten…
Information metric from Riemannian superspaces
Diego Julio Cirilo-Lombardo, Victor I. Afonso
The Fisher's information metric is introduced in order to find the real meaning of the probability distribution in classical and quantum systems described by Riemaniann non-degener…
Quaternionic and Hyper-Kähler Metrics from Generalized Sigma Models
V. I. Afonso, D. Bazeia, D. J. Cirilo-Lombardo
The problem of finding new metrics of interest, in the context of SUGRA, is reduced to two stages: first, solving a generalized BPS sigma model with full quaternionic structure pro…
f(R)-Brane
V. I. Afonso, D. Bazeia, R. Menezes +1
We investigate the existence of brane solutions in braneworld scenarios described by real scalar field in the presence of modified gravity with a single extra dimension. In…
Deforming tachyon kinks and tachyon potentials
V. I. Afonso, D. Bazeia, F. A. Brito
In this paper we investigate deformation of tachyon potentials and tachyon kink solutions. We consider the deformation of a DBI type action with gauge and tachyon fields living on…