38 citations · 243 across the 33 of their papers we have counts for
25 papers · 1 filter
From disformal electrodynamics to exotic spacetime singularities
Eduardo Bittencourt, Ricardo Fernandes, Érico Goulart +1
We study different types of spacetime singularities which emerge in the context of disformal electrodynamics. The latter is characterized by transformations of the background metri…
Light propagation in (2+1)-dimensional electrodynamics: the case of linear constitutive laws
Érico Goulart, Eduardo Bittencourt, Elliton O. S. Brandão
In this paper, we turn our attention to light propagation in three-dimensional electrodynamics. More specifically, we investigate the behavior of light rays in a continuous bi-dime…
On the intrinsically flat cosmological models in a lattice
Eduardo Bittencourt, Leandro G. Gomes, Grasiele B. Santos
In this manuscript we investigate the intrinsically flat (space-flat) spacetimes as viable cosmological models. We show that they have a natural geometric structure which is suitab…
Galaxy rotation curves in the light of the Spinor Theory of Gravity
Mario Novello, Angelo E. S. Hartmann, E. Bittencourt
We analyze the recently obtained static and spherically symmetric solution of the Spinor Theory of Gravity (STG) which, in the weak field limit, presents an effective Newtonian pot…
Spherical symmetry and nonmagnetic dielectrics in analogue models of gravity
Eduardo Bittencourt, Diego Renan Da Silva, Érico Goulart +1
Nonmagnetic and spherically symmetric dielectric material media are investigated in their generality as analogue models, in the domains of geometrical optics, for a few relevant st…
Space and time ambiguities in vacuum electrodynamics
Érico Goulart, Eduardo Bittencourt
It is shown that every regular electromagnetic field in vacuum identically satisfy Maxwell equations in a new manifold where the roles of space and time have been exchanged. The ne…