8 papers
A Supersymmetric Extension of Axionic Electrodynamics: From Axions and Photons to Axinos and Photinos
C. Roldán-DomÃnguez, H. Belich, W. Spalenza +3
In this contribution, we construct a supersymmetric extension of axionic electrodynamics by adopting the superspace/superfield approach. In terms of component fields, the resulting…
Extending the Euler-Heisenberg action to include effects of local Lorentz-symmetry violating backgrounds
Wagno Cesar e Silva, João Paulo S. Melo, João Paulo S. Melo +2
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…
Stellar Bounds on a Model with Photon-Photino Oscillation
Bernard Teles de Menezes, José Abdalla Helayël-Neto
In this paper, we pursue an investigation of the consequences of a mixing between supersymmetric partners - the photon and photino - analogous to the so-called Primakoff effect, bu…
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…
Green's functions under magnetic effects in a nontrivial topology
Emerson B. S Corrêa, Michelli S. R. Sarges, José A. Helayël-Neto
We calculate the Bose and Dirac field propagators in a four-dimensional Euclidean space under a magnetic external field by using a hybrid version of the Ritus and Schwinger methods…
Contributions to decays from a X17 extension of the Standard Model
D. O. R. Azevedo, M. L. Bispo, O. M. Del Cima +1
The present work proposes a Born-Infeld contribution to the extension of the Standard Model, where it is introduced associated to the X17 neutral boson. The decay widt…