7 papers
On the causality properties in non-local gravity theories
J. R. Nascimento, A. Yu. Petrov, P. J. Porfírio
It is well known that non-local theories of gravity have been a flourish arena of studies for many reasons, for instance, the UV incompleteness of General Relativity (GR). In this…
Strong gravitational lensing in a spacetime with topological charge within the Eddington-inspired Born-Infeld gravity
C. Furtado, J. R. Nascimento, A. Yu. Petrov +2
In this work we calculate the angular deflection of light in the strong field limit in two spacetimes which were previously studied within the Eddington-inspired Born-Infeld gravit…
Gödel-type Solutions in Cubic Galileon Gravity
J. R. Nascimento, A. Yu. Petrov, P. Porfírio +1
We address the homogeneous in space and time (ST-homogeneous) Gödel-type metrics within the cubic galileon theory, a particular class of generalized galileon theories. We check the…
Graphene-based topological insulator in the presence of a disclination submitted to a uniform magnetic field
J. R. S. Oliveira, G. Q. Garcia, P. J. Porfírio +1
In this paper we investigate quasiparticles in graphene-based topological insulator with a wedge disclination in the presence of a uniform magnetic field. In particular, we conside…
Gaussian null coordinates, near-horizon geometry and conserved charges on the horizon of extremal non-dilatonic black -branes
Mirjam Cvetič, Paulo J. Porfírio, Alejandro Satz
In this paper, we examine the emergence of conserved charges on the horizon of a particular class of extremal non-dilatonic black -branes (which reduce to extremal dilatonic bla…
Nonlinear -models in the Eddington-inspired Born-Infeld Gravity
J. R. Nascimento, Gonzalo J. Olmo, P. J. Porfírio +2
In this paper we consider two different nonlinear -models minimally coupled to Eddington-inspired Born-Infeld gravity. We show that the resultant geometries represent minimal mo…