36 citations · 175 across the 18 of their papers we have counts for
19 papers
On perturbative aspects of a nonminimal Lorentz-violating QED with CPT-odd dimension-6 terms
T. Mariz, M. Melo, J. R. Nascimento +1
In this paper, we investigate the first-order one-loop quantum corrections generated by all possible nonminimal dimension-6 additive CPT-odd Lorentz-violating (LV) terms to analyze…
Perturbative Analysis of CPT-Odd Lorentz-Violating Scalar QCD
J. C. C. Felipe, L. C. T. Brito, A. C. Lehum +2
We perform a complete one-loop renormalization analysis of CPT-odd Lorentz-violating scalar quantum chromodynamics with adjoint scalar matter. Working to first order in the preferr…
Vacuum Cherenkov Radiation for Nonminimal Isotropic Lorentz Violation
Albert Yu. Petrov, Marco Schreck, Alexandre R. Vieira
In this work, we study the effects of vacuum Cherenkov radiation caused by nonminimal dimension-5 Lorentz-violating (LV) operators in the fermion sector. Explicitly, we focus on tw…
Carroll-Field-Jackiw term in a massless Rarita-Schwinger model
M. Gomes, J. G. Lima, T. Mariz +2
We consider the massless Rarita-Schwinger (RS) LV QED. In this theory, we introduce the gauge fixing to obtain the propagator for the RS field, and calculate the Carroll-Field-Jack…
Calculations in Lorentz-breaking scalar QED
Jean C. C. Felipe, A. Yu Petrov, A. P. B. Scarpelli +1
We purpose a study a Lorentz-breaking extension of the scalar QED. We calculate the contributions in the Lorentz-violating parameters to the two-point functions of scalar and gauge…
Lorentz symmetry breaking and supersymmetry
J. R. Nascimento, A. Yu. Petrov
We discuss three manners to implement Lorentz symmetry breaking in a superfield theory formulated within the superfield formalism, that is, deformation of the supersymmetry algebra…
One-loop calculations in Lorentz-breaking theories and proper-time method
A. F. Ferrari, J. Furtado, J. F. Assunção +2
We discuss applications of the proper-time method in various minimal Lorentz violating modifications of QED and present new results obtained with its use. Explicitly. we calculate…
Perturbative generation of photon Lorentz violating terms from a pseudo-tensor Lorentz-breaking extension of QED
A. J. G. Carvalho, A. F. Ferrari, A. M. de Lima +2
We consider an extended QED with the addition of a dimension-five Lorentz-breaking coupling between spinor and gauge fields, involving a pseudo-tensor . The specific form…
Nonanalyticity of the induced Carroll-Field-Jackiw term at finite temperature
J. F. Assuncao, T. Mariz, A. Yu. Petrov
In this paper, we discuss the behavior of the Carroll-Field-Jackiw (CFJ) coefficient arising due to integration over massive fermions, and the modification suffered by its to…
On the radiative corrections in the Horava-Lifshitz z=2 QED
M. Gomes, T. Mariz, J. R. Nascimento +2
We calculate one-loop contributions to the two and three point spinor-vector functions in z=2 Horava-Lifshitz QED. This allows us to obtain the anomalous magnetic moment.
Generation of higher derivatives operators and electromagnetic wave propagation in a Lorentz-violation scenario
L. H. C. Borges, A. G. Dias, A. F. Ferrari +2
We study the perturbative generation of higher-derivative operators as corrections to the photon effective action, which are originated from a Lorentz violation background. Such co…
Remarks on a Lorentz-breaking 4D chiral gauge theory
A. P. Baêta Scarpelli, M. Gomes, A. Yu. Petrov +1
We investigate a Lorentz-violating chiral model composed by two fermions, a complex scalar field and a gauge field. We show that by convenientely adjusting the parameters of the mo…
On one-loop corrections in the Horava-Lifshitz-like QED
M. Gomes, T. Mariz, J. R. Nascimento +3
We study the one-loop two point functions of the gauge, scalar and spinor fields for a Horava-Lifshitz-like QED with critical exponent . It turns out that, in certain cases, t…
Lorentz violation in the linearized gravity
A. F. Ferrari, A. Yu. Petrov
We study some consequences of the introduction of a Lorentz-violating modification term in the linearized gravity, which leads to modified dispersion relations for gravitational wa…
On the aether-like Lorentz-breaking action for the electromagnetic field
M. Gomes, J. R. Nascimento, A. Yu. Petrov +1
We study the generation of aether-like Lorentz-breaking actions in three, four and five dimensions via an appropriate Lorentz-breaking coupling of electromagnetic and spinor fields…
Horava-Lifshitz modifications of the Casimir effect
A. F. Ferrari, H. O. Girotti, M. Gomes +2
We study the modifications induced by spacetime anisotropy on the Casimir effect in the case of two parallel plates. Nonperturbative and perturbative regimes are analyzed. In the f…
On the superfield effective potential in three dimensions
A. F. Ferrari, M. Gomes, A. C. Lehum +4
We develop the superfield approach to the effective potential in three dimensions and calculate the one-loop and two-loop kählerian effective potential in commutative and noncommut…
Equivalence between supersymmetric self-dual and Maxwell-Chern-Simons models coupled to a matter spinor superfield
A. F. Ferrari, M. Gomes, A. C. Lehum +3
We study the duality of the supersymmetric self-dual and Maxwell-Chern-Simons theories coupled to a fermionic matter superfield, using a master action. This approach evades the dif…
Two-dimensional Lorentz-violating Chern-Simons-like action
E. Passos, A. Yu. Petrov
We demonstrate generation of the two-dimensional Chern-Simons-like Lorentz-breaking action via an appropriate Lorentz-breaking coupling of scalar and spinor fields at zero as well…