1 citations · 1 across the 3 of their papers we have counts for
9 papers
Extending the Euler-Heisenberg action to include effects of local Lorentz-symmetry violating backgrounds
Wagno Cesar e Silva, João Paulo S. Melo, José A. Helayël-Neto
This work sets out to compute the corrections to the Euler-Heisenberg effective action that arise from spacetime-dependent background anisotropies that violate Lorentz symmetry. To…
A Supersymmetric Extension of Axionic Electrodynamics: From Axions and Photons to Axinos and Photinos
C. Roldán-Domínguez, H. Belich, W. Spalenza +3
In this contribution, we investigate a supersymmetric effective extension of Axionic Electrody- namics by adopting the superspace/superfield approach. Rather than focusing on UV-co…
LQG-modified dispersion relations and the problem of cosmic photons threshold anomalies
P. A. L. Mourão, G. L. L. W. Levy, J. A. Helayël-Neto
Our present contribution sets out to investigate how combined effects of Lorentz invariance violation (LIV) and loop quantum gravity (LQG)-modified photon dispersion relations affe…
Photon frequency variation in non-linear electro-magnetism
Alessandro D. A. M. Spallicci, Abedennour Dib, José A. Helayël-Neto
We set a generalised non-linear Lagrangian, encompassing Born-Infeld and Heisenberg-Euler theories among others. The Lagrangian reduces to the Maxwell Lagrangian at lowest order. T…
Re-assessing special aspects of Dirac fermions in presence of Lorentz-symmetry violation
João Paulo S. Melo, José A. Helayël-Neto
This paper focuses on additional inspections concerning the fermionic sector of the Standard Model Extension (SME). In this context, our main effort in this contribution is to inve…
QED-vacuum response and Cherenkov radiated energy in non-linear and Lorentz-symmetry violating scenarios
Patricio Gaete, José Abdalla Helayël-Neto
We investigate physical consequences of non-linear electrodynamic coupled to parameters that signal violation Lorentz-symmetry breaking (LSV). Our undertaking is done by considerin…