248 citations · 289 across the 5 of their papers we have counts for
5 papers
Exact modifications on a vacuum spacetime due to a gradient bumblebee field at its vacuum expectation value
F. P. Poulis, M. A. C. Soares
This work belongs to the context of the standard-model extension, in which a Lorentz symmetry violation is induced by a bumblebee field as it acquires a nonzero vacuum expectation…
An exact Schwarzschild-like solution in a bumblebee gravity model
R. Casana, A. Cavalcante, F. P. Poulis +1
We have obtained an exact vacuum solution from a gravity sector contained in the minimal standard-model extension. The theoretical model assumes a Riemann spacetime coupled to the…
Weyl geometry and gauge-invariant gravitation
F. P. Poulis, J. M. Salim
We provide a gauge-invariant theory of gravitation in the context of Weyl Integrable Space-Times. After making a brief review of the theory's postulates, we carefully define the ob…
Weyl Geometry as Characterization of Space-Time
F. P. Poulis, J. M. Salim
Motivated by an axiomatic approach to characterize space-time it is investigated a reformulation of Einstein's gravity where the pseudo-riemannian geometry is substituted by a Weyl…
Bounce and wormholes
N. Pinto-Neto, F. P. Poulis, J. M. Salim
We investigate if theories yielding bouncing cosmological models also generate wormhole solutions. We show that two of them present sensible traversable static wormhole solutions,…