99 citations · 529 across the 26 of their papers we have counts for
26 papers
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…
Global monopole in a Ricci-coupled Kalb-Ramond bumblebee gravity
F. M. Belchior, R. V. Maluf, A. Yu. Petrov +1
In this paper, we investigate black hole solutions in Einstein-Kalb-Ramond (EKR) bumblebee gravity sourced by a global monopole characterized by the charge . This modified theor…
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-…
Generalized Chern-Pontryagin models
J. R. Nascimento, A. Yu. Petrov, P. J. Porfírio +1
We formulate a new class of modified gravity models, that is, generalized four-dimensional Chern-Pontryagin models, whose action is characterized by an arbitrary function of the Ri…
One-loop corrections in Maxwell-metric-affine bumblebee gravity
A. C. Lehum, J. R. Nascimento, A. Yu. Petrov +1
In this paper, we consider the coupling of the metric-affine bumblebee gravity to the Abelian gauge field and obtain the effective model corresponding to the weak gravity limit of…
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…
Thermodynamical properties of a deformed Schwarzschild black hole via Dunkl generalization
P. Sedaghatnia, H. Hassanabadi, A. A. Araújo Filho +2
In this paper, we construct a deformed Schwarzschild black hole from the de Sitter gauge theory of gravity within Dunkl generalization and we determine the metric coefficients vers…
Gödel-type solutions within the gravity
J. R. Nascimento, A. Yu. Petrov, P. J. Porfirio +1
In this work, we scrutinize the consistency of spacetime homogeneous Gödel-type metrics within theories of gravity for well-motivated matter sources. As it is well known…
Quasinormal modes of Schwarzschild black holes in projective invariant Chern-Simons modified gravity
Simon Boudet, Flavio Bombacigno, Gonzalo J. Olmo +1
We generalize the Chern-Simons modified gravity to the metric-affine case and impose projective invariance by supplementing the Pontryagin density with homothetic curvature terms w…
Dualization between supersymmetric self-dual and topologically massive models coupled to matter in four-dimensional superspace
F. S. Gama, R. V. Maluf, J. R. Nascimento +2
Using the superfield formalism and the master action approach, we prove, both at the classical and quantum levels, the dual equivalence between four-dimensional supersymmetric self…
Spontaneous Lorentz symmetry breaking and one-loop effective action in the metric-affine bumblebee gravity
Adrià Delhom, T. Mariz, J. R. Nascimento +3
The metric-affine bumblebee model in the presence of fermionic matter minimally coupled to the connection is studied. We show that the model admits an Einstein frame representation…
Softly higher-derivative massive gravity
C. A. S. Almeida, W. T. Cruz, R. V. Maluf +2
In this work, we study the higher-derivative massive gravity in -dimensional space-time with the mass term arisen due to a 2-brane embedded in a Minkowski spacetime. We con…
First-order perturbations of Gödel-type metrics in non-dynamical Chern-Simons modified gravity
B. Altschul, J. R. Nascimento, A. Yu. Petrov +1
Gödel-type metrics that are homogeneous in both space and time remain, like the Schwarzschild metric, consistent within Chern-Simons modified gravity; this is true in both the non-…
Radiative corrections in metric-affine bumblebee model
Adrià Delhom, J. R. Nascimento, Gonzalo J. Olmo +2
We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metr…
Gravitational lensing in a black-bounce traversable wormhole spacetime
J. R. Nascimento, A. Yu. Petrov, P. J. Porfirio +1
In this work, we calculate the deflection angle of light in a spacetime that interpolates between regular black holes and traversable wormholes, depending on the free parameter of…
Metric-affine bumblebee gravity: classical aspects
Adria Delhom, J. R. Nascimento, Gonzalo J. Olmo +2
We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metr…
Effective Potential in the 3D Massive 2-form Gauge Superfield Theory
F. S. Gama, J. R. Nascimento, A. Yu. Petrov +1
In the , superspace, we propose a massive superfield theory formulated in terms of a spinor gauge superfield, whose component content includes a two-form field…
Global Monopole in Palatini f(R) gravity
J. R. Nascimento, Gonzalo J. Olmo, A. Yu. Petrov +2
We consider the space-time metric generated by a global monopole in an extension of General Relativity (GR) of the form . The theory is f…
Spontaneous Symmetry Breaking in the Nonlocal Scalar QED
F. S. Gama, J. R. Nascimento, A. Yu. Petrov +1
We investigate the spontaneous symmetry breaking in a nonlocal version of the scalar QED. When the mass parameter satisfies the requirement , we find that all fields,…
Traversable wormholes in Chern-Simons modified gravity
J. R. Nascimento, A. Yu. Petrov, P. J. Porfirio
In this paper, we examine the existence of traversable wormhole solutions within the Chern-Simons modified gravity. We find a non-trivial solution in the theory with dynamical Cher…
One-loop effective potential in the non-local supersymmetric gauge theory
F. S. Gama, J. R. Nascimento, A. Yu. Petrov +1
Using the superfield formalism, we propose a non-local extension of the supersymmetric gauge theory coupled to massless chiral matter. Two different non-local models are considered…
Gödel-type solutions within the f(R,Q) gravity
F. S. Gama, J. R. Nascimento, A. Yu. Petrov +2
In this paper, we deal with the gravity whose action depends, besides of the scalar curvature , on the higher-derivative invariant . In order to compare…
On the causality aspects of the dynamical Chern-Simons modified gravity
P. J. Porfirio, J. B. Fonseca-Neto, J. R. Nascimento +1
We discuss the Gödel-type solutions within the dynamical Chern-Simons modified gravity in four dimensions. Within our study, we show that in the vacuum case the causal solutions ar…