248 citations · 2.1k across the 93 of their papers we have counts for
9 papers · 1 filter
Non-minimal matter sector couplings in Lorentz-violating gravity: Self-consistent traversable wormholes and quasinormal modes
Renan B. Magalhães, Leandro A. Lessa, Rodolfo Casana
The anisotropies induced by Lorentz-violating fields pose significant challenges for the search for compact objects in non-vacuum environments. In this work, nevertheless, we demon…
Exact Kerr-like solution and its shadow in a gravity model with spontaneous Lorentz symmetry breaking
Chikun Ding, Changqing Liu, R. Casana +1
We obtain an exact Kerr-like black hole solution by solving the corresponding gravitational field equations in Einstein-bumblebee gravity model where Lorentz symmetry is spontaneou…
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…
Electromagnetic Field in Lyra Manifold: A First Order Approach
R. Casana, C. A. M. de Melo, B. M. Pimentel
We discuss the coupling of the electromagnetic field with a curved and torsioned Lyra manifold using the Duffin-Kemmer-Petiau theory. We will show how to obtain the equations of mo…
Spinorial Field and Lyra Geometry
R. Casana, C. A. M. de Melo, B. M. Pimentel
The Dirac field is studied in a Lyra space-time background by means of the classical Schwinger Variational Principle. We obtain the equations of motion, establish the conservation…
Massless DKP field in Lyra manifold
R. Casana, C. A. M. de Melo, B. M. Pimentel
Massless scalar and vector fields are coupled to Lyra geometry by means of Duffin-Kemmer-Petiau (DKP) theory. Using Schwinger Variational Principle, equations of motion, conservati…
Conformal invariance of massless Duffin-Kemmer-Petiau theory in Riemannian space-times
R. Casana, B. M. Pimentel, J. T. Lunardi +1
We investigate the conformal invariance of massless Duffin-Kemmer-Petiau theory coupled to riemannian space-times. We show that, as usual, in the minimal coupling procedure only th…
Massless DKP fields in Riemann-Cartan space-times
R. Casana, V. Ya. Fainberg, B. M. Pimentel +2
We study massless Duffin-Kemmer-Petiau (DKP) fields in the context of Einstein-Cartan gravitation theory, interacting via minimal coupling procedure. In the case of an identically…
Spin 1 fields in Riemann-Cartan space-times "via" Duffin-Kemmer-Petiau theory
R. Casana, B. M. Pimentel, J. T. Lunardi +1
We consider massive spin 1 fields, in Riemann-Cartan space-times, described by Duffin-Kemmer-Petiau theory. We show that this approach induces a coupling between the spin 1 field a…