9 papers
A novel nonlocal spin-1/2 theory: classical and quantum aspects
J. R. Nascimento, Gonzalo J. Olmo, A. Yu. Petrov +2
We propose a novel nonlocal spin-1/2 theory in which the form factor depends on the Dirac operator rather than on the d'Alembert operator. In this scenario, we explore some classic…
Gravitational lensing by a Lorentz-violating black hole
A. A. Araújo Filho, J. R. Nascimento, A. Yu. Petrov +1
In this work, we study the gravitational lensing by a Lorentz-violating (LV) black hole inspired by the recent contribution [1]. Explicitly, we concentrate on a specific applicatio…
Shadow structure of generalized black-bounce metrics
Jose R. Nascimento, Ana R. M. Oliveira, Albert Yu. Petrov +2
The existence of black hole shadows is one of the most interesting effects of the strong field regime of general relativity (GR). Recent observations by the Event Horizon Telescope…
Gravitational lensing by generalized black-bounce space-times
C. Furtado, A. L. A. Moreira, J. R. Nascimento +2
We study gravitational lensing by generalized black-bounce space-times both in regimes of weak and strong field approximations. These metrics interpolate between regular blac…
New brane-like solutions in modified four-dimensional Einstein-Gauss-Bonnet gravity
D. Bazeia, R. Menezes, A. Yu. Petrov +1
We investigate solutions of a new Einstein-Gauss-Bonnet gravity ( ). We first describe the bulk vacuum solution, then we add a massive probe scalar field, and we foll…
Geometrical deformation of brane matter field within gravity
Fernando M. Belchior, Roberto V. Maluf, Albert Yu. Petrov +1
In the context of braneworld scenarios, the real scalar field plays a crucial role by providing thickness for brane. In this work, we investigate a codimension-one thick brane with…