92 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal de Minas GeraisBR12 papers
- Universidade Federal do ParanáBR6 papers
- Universidade Federal do Rio Grande do SulBR6 papers
- Universidade Federal da ParaíbaBR5 papers
- Universidade Federal de LavrasBR4 papers
- Alma Mater EuropaeaSI3 papers
- China Medical UniversityTW3 papers
- China Medical University HospitalTW3 papers
- Complexity Science HubAT3 papers
- Durham UniversityGB3 papers
- Universidade de São PauloBR3 papers
- Universidade Estadual de MaringáBR3 papers
12 papers · 1 filter
Effective potential in Lorentz-breaking field theory models
A. P. Baeta Scarpelli, L. C. T. Brito, J. C. C. Felipe +2
We calculate explicitly the one-loop effective potential in different Lorentz-breaking field theory models. First, we consider a Yukawa-like theory and, then, some examples of Lore…
Tree-level equivalence between a Lorentz-violating extension of QED and its dual model in electron-electron scattering
Giuliano R. Toniolo, H. G. Fargnoli, L. C. T. Brito +1
S-matrix amplitudes for the electron-electron scattering are calculated in order to verify the quantum equivalence of dual models. We used an extended Quantum Electrodynamics with…
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…
Subtleties in the beta function calculation of N=1 supersymmetric gauge theories
A. L. Cherchiglia, Marcos Sampaio, B. Hiller +1
We investigate some peculiarities in the calculation of the two-loop beta-function of supersymmetric models which are intimately related to the so-called "Anomaly Puzzle". Th…
On the anomalies in Lorentz-breaking theories
A. P. Baeta Scarpelli, T. Mariz, J. R. Nascimento +1
In this paper, we discuss the chiral anomaly in a Lorentz-breaking extension of QED which, besides the common terms that are present in the Standard Model Extension, includes some…
On the duality in CPT-even Lorentz-breaking theories
A. P. Baeta Scarpelli, J. R. Nascimento, A. Yu. Petrov +1
In this paper, we generalize the duality between self-dual and Maxwell-Chern-Simons theories for the case of a CPT-even Lorentz-breaking extension of these theories. The duality is…
Dual embedding of extended models with a Lorentz-breaking mass term
H. G. Fargnoli, L. C. T. Brito, A. P. Baêta Scarpelli +1
In this paper, we investigate a CPT-even model with a Lorentz-violating mass term. Such kind of models may present very interesting features like superluminal modes of propagation…
Arbitrariness in the gravitational Chern-Simons-like term induced radiatively
J. C. C. Felipe, A. R. Vieira, A. L. Cherchiglia +2
Lorentz violation through a radiatively induced Chern-Simons-like term in a fermionic theory embedded in linearized quantum gravity with a Lorentz- and CPT-violating axial-vector t…
Aspects of Quantum Corrections in a Lorentz-violating Extension of the Abelian Higgs Model
L. C. T. Brito, H. G. Fargnoli, A. P. Baêta Scarpelli
We investigate new aspects related to the abelian gauge-Higgs model with the addition of the Carroll-Field-Jackiw term. We focus on one-loop quantum corrections to the photon and H…
Four-dimensional aether-like Lorentz-breaking QED revisited and problem of ambiguities
A. P. Baeta Scarpelli, T. Mariz, J. R. Nascimento +1
In this paper, we consider the perturbative generation of the CPT-even aether-like Lorentz-breaking term in the extended Lorentz-breaking QED within different approaches and discus…
QED with minimal and nonminimal couplings: on the quantum generation of Lorentz violating terms in the pure photon sector
G. Gazzola, H. G. Fargnoli, A. P. Baêta Scarpelli +2
We consider an effective model formed by usual QED (minimal coupling) with the addition of a nonminimal Lorentz violating interaction (proportional to a fixed 4-vector ) which…
Regularization Independent Analysis of the Origin of Two Loop Contributions to N=1 Super Yang-Mills Beta Function
H. G. Fargnoli, B. Hiller, A. P. Baêta Scarpelli +2
We present a both ultraviolet and infrared regularization independent analysis in a symmetry preserving framework for the N=1 Super Yang-Mills beta function to two loop order. We s…