4 papers
On a Gödel-like Solution in Non-Relativistic Gravity
A. F. Santos, R. G. G. Amorim, K. V. S. Araújo +1
The article deals with Gödel-like solutions in the context of Galilean gravity, a geometric formulation of non-relativistic gravitation defined on a five-dimensional Galilean mani…
Gödel-symmetric backgrounds and explicit spacetime symmetry breaking
César Riquelme, Carlos M. Reyes, A. F. Santos
Explicit breaking of diffeomorphism symmetry with nondynamical background fields in gravitational theories can lead to inconsistencies between the equations of motion and the under…
On Nonrelativistic Isotropic and Homogeneous Universe
R. G. G. Amorim, A. F. Santos, K. V. S. Araújo +1
This article deals with a nonrelativistic cosmological model based on Galilean covariance, formulated within a five-dimensional Galilean manifold. Within this framework, we constru…
On causality and its violation in $f(R,\lm,T)$ gravity
J. S. Gonçalves, A. F. Santos
In this paper, $f(R,\lm, T)$ gravity is considered. It is a generalization of the theories and $f(R, \lm)$. This modified theory of gravity exhibits strong geometry-matter…