40 citations · 56 across the 16 of their papers we have counts for
16 papers
Carroll-Field-Jackiw term in nonlocal Lorentz-violating QED
J. R. Nascimento, A. Yu. Petrov, P. J. Porfirio +1
We investigate the radiative generation of the Carroll--Field--Jackiw (CFJ) term in nonlocal Lorentz- and CPT-violating extensions of quantum electrodynamics. Nonlocality is introd…
Nonrotating and rotating black holes with secondary disformal hair in a ghost-free metric-affine parity-violating scalar-torsion theory
E. Brito, G. Macedo, J. R. Nascimento +2
In this paper, we formulate a ghost-free metric-affine scalar-torsion model in which a pseudoscalar field is coupled to the Nieh--Yan density and derivatively coupled to the Einste…
One-loop contributions in Lorentz-violating scalar QED with nonminimal coupling
F. M. Belchior, J. R. Nascimento, A. Yu. Petrov +1
In the context of pertubative aspects of Lorentz-violating theories, we study the divergent one-loop two-point functions of a Lorentz-violating (LV) extension of scalar QED contain…
Complex bumblebee model
Willian Carvalho, A. C. Lehum, J. R. Nascimento +1
We formulate a renormalizable complex extension of the bumblebee theory in which the bumblebee field is promoted to a complex one and coupled to an Abelian gauge sector. Besides th…
Rotating black hole shadows in metric-affine bumblebee gravity
Jose R. Nascimento, Ana R. M. Oliveira, Albert Yu. Petrov +2
In this work, we investigate the structure of black hole shadows in the bumblebee gravity model formulated within the metric-affine framework, which incorporates spontaneous Lorent…
Lorentz violating quadratic gravity
R. B. Alfaia, Willian Carvalho, A. C. Lehum +3
In this paper, we explore the perturbative renormalization and study the classical dynamics of the bumblebee model coupled to quadratic gravity, a theoretical setting that allows t…
Classical investigations in a CPT-even Lorentz-violating model and their implications for the Compton effect
E. Neres Júnior, J. C. C. Felipe, A. P. Baêta Scarpelli +2
In this work, we investigate some aspects of the Maxwell electrodynamics with the additive Lorentz-violating (LV) CPT-even term. For this model, we derive the energy and momentum c…
Nonlocal spinor superfield theory
F. S. Gama, J. R. Nascimento, G. Olmo +2
In this work, we propose a new three-dimensional nonlocal spinor superfield model. This theory is constructed by introducing form factors in the local spinor superfield action. The…
Nonrelativistic effective potential of the bumblebee model
C. Furtado, J. R. Nascimento, A. Yu. Petrov +1
In this paper, we explicitly obtain the nonrelativistic Breit potential in the bumblebee model arising in the weak gravity limit of the metric-affine bumblebee gravity, coupled to…
One-loop Euler-Heisenberg action in Lorentz-violating QED revisited
R. Araújo, T. Mariz, J. R. Nascimento +1
We discuss applications of the proper-time method in a Lorentz-violating extension of QED characterized by the addition of the term proportional to the antisymmetric tensor $H_{μν}…
Mixed gauge-gravity term and proper time
J. R. Nascimento, M. Paganelly, A. Yu. Petrov +1
We consider the four-dimensional action of spinors minimally coupled to a -gauge field in an Riemann-Cartan background. In this theory, we integrate over the spinors and stud…
Dual equivalence between the Maxwell-Chern-Simons theory and two self-dual massive models interacting with matter in , superspace
F. S. Gama, J. R. Nascimento, A. Yu. Petrov +1
We investigate the supersymmetric generalization of the dual equivalence between the Maxwell-Chern-Simons model and two massive self-dual models. One of the self-…
Dynamical Lorentz Symmetry Breaking in a Scale-free Theory of Gravity
A. C. Lehum, J. R. Nascimento, A. Yu. Petrov +1
This paper explores the renormalization of scale-free quadratic gravity coupled to the bumblebee field and its potential for dynamically breaking Lorentz symmetry. We conduct one-l…
Two-loop corrections to the Carroll-Field-Jackiw term in a CPT-odd Lorentz-violating scalar QED
A. C. Lehum, J. R. Nascimento, A. Yu. Petrov
In this study, we systematically calculate one-loop corrections to the Lorentz-violating vertices within the framework of CPT-odd Quantum Electrodynamics, encompassing scalar and p…
On metric-affine bumblebee model coupled to scalar matter
J. R. Nascimento, Gonzalo J. Olmo, A. Yu. Petrov +1
We consider the coupling of the metric-affine bumblebee gravity model to scalar matter and calculate the lower-order contributions to two-point functions of bumblebee and scalar fi…
Gödel and Gödel-type universes in Brans-Dicke theory
J. A. Agudelo, J. R. Nascimento, A. Yu. Petrov +2
In this paper, conditions for existence of Gödel and Gödel-type solutions in Brans-Dicke (BD) scalar-tensor theory and their main features are studied. The consistency of equations…