158 citations · 1.5k across the 106 of their papers we have counts for
110 papers
Dispersion relation, propagation features and canonical gauge structure of GNLED
Abedennour Dib, José A. Helayël-Neto, Tomislav Prokopec +2
We investigate the propagation properties and canonical gauge structure of Generalised Non-Linear Electrodynamics (GNLED) in the presence of a non-dynamical background field. Start…
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…
SUSY QED with Lorentz-asymmetric fermionic matter and a glance at the electron's EDM
João Paulo S. Melo, Wagno Cesar e Silva, José A. Helayël-Neto
This contribution sets out to pursue the investigation of a supersymmetric electrodynamics model with Lorentz-symmetry violation (LSV) manifested by a space-time unbalance in the p…
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…
Gambini-Pullin Electrodynamics as a scenario for Cherenkov radiation in QED vacuum
Patricio Gaete, J. A. Helayël-Neto
We examine the electromagnetic radiation produced by a moving charge in the QED vacuum that behaves as a dispersive medium characterized by a geometrical structure (discreteness/gr…
Probing the interference between non-linear, axionic and space-time-anisotropy effects in the QED vacuum
J. M. A. Paixão, L. P. R. Ospedal, M. J. Neves +1
We pursue the investigation of a generic non-linear extension of axionic electrodynamics in a Carroll-Field-Jackiw (CFJ) scenario that implements Lorentz-symmetry violation (LSV).…
Considerations on the modified Maxwell electrodynamics in the presence of an electric and magnetic background
M. J. Neves, Patricio Gaete, L. P. R. Ospedal +1
The properties of the modified Maxwell electrodynamics (ModMax) are investigated in presence of external and uniform electric and magnetic fields. We expand the non-linear theory a…
Constraining the photon mass via Schumann resonances
P. C. Malta, J. A. Helayël-Neto
The photon is the paradigm for a massless particle and current experimental tests set severe upper bounds on its mass. Probing such a small mass, or equivalently large Compton wave…
Lorentz-symmetry violation in scenarios of non-linear electromagnetic models: a preliminary inspection
P. Gaete, J. A. Helayël-Neto
In this contribution, our efforts consist in presenting and discussing the status of a paper in progress we are working on to investigate how non-linear electromagnetic effects cou…
Vacuum material properties and Cherenkov radiation in Logarithmic Electrodynamics
P. Gaete, J. A. Helayël-Neto
We study some observational signatures of nonlinearities of the electromagnetic field. First to all we show the vital role played by nonlinearities in triggering a material behavio…
The axion-photon mixing in non-linear electrodynamic scenarios
J. M. A. Paixão, L. P. R. Ospedal, M. J. Neves +1
In this contribution, we re-assess some aspects of axionic electrodynamics by coupling non-linear electromagnetic effects to axion physics. We present a number of motivations to ju…
Testing the Ampère-Maxwell law on the photon mass and Lorentz-Poincaré symmetry violation with MMS multi-spacecraft data
Alessandro D. A. M. Spallicci, Giuseppe Sarracino, Orélien Randriamboarison +2
We investigate possible evidence from Extended Theories of Electro-Magnetism by looking for deviations from the Ampère-Maxwell law. The photon, main messenger for interpreting the…
Aspects of the gauge boson-gaugino mixing in a supersymmetric scenario with Lorentz-symmetry violation
R. C. Terin, W. Spalenza, H. Belich +1
We write down an supersymmetric extension for non-Abelian gauge theories in (1+3) dimensions with a Lorentz- and CPT-violating term of the Carroll-Field-Jackiw type…
Phenomenology of a Born-Infeld extension of the sector at lepton colliders
P. De Fabritiis, P. C. Malta, J. A. Helayël-Neto
In this work we perform a non-linear extension of the sector of the Standard Model leading to novel quartic effective interactions between the neutral gauge bosons.…
Considerations on anomalous photon and Z-boson self-couplings from the Born-Infeld weak hypercharge action
M. J. Neves, L. P. R. Ospedal, J. A. Helayël-Neto +1
We investigate the effects of the Born-Infeld action on the Abelian sector of the electroweak model. The consequence of this approach is the emergence of anomalous couplings in the…
Solving two-dimensional non-relativistic electronic and muonic atoms governed by Chern-Simon potential
Francisco Caruso, José A. Helayël-Neto, Vitor Oguri +1
Bidimensional muonic and electronic atoms, with nuclei composed of a proton, deuteron, and triton, and governed by Chern-Simons potential, are numerically solved. Their eigenvalues…
Supersymmetry and Fermionic Modes in an Oscillon Background
R. A. C. Correa, L. P. R. Ospedal, W. de Paula +1
The excitations referred to as oscillons are long-lived time-dependent field configurations which emerge dynamically from non-linear field theories. Such long-lived solutions are o…
Photon sector analysis of Super and Lorentz symmetry breaking: effective photon mass, bi-refringence and dissipation
Luca Bonetti, Luís R. dos Santos Filho, José A. Helayël-Neto +1
Within the Standard Model Extension (SME), we expand our previous findings on four classes of violations of Super-Symmetry (SuSy) and Lorentz Symmetry (LoSy), differing in the hand…
Fermion inter-particle potentials in 5D and a dimensional restriction prescription to 4D
L. P. R. Ospedal, J. A. Helayël-Neto
This work sets out to compute and discuss effects of spin, velocity and dimensionality on inter-particle potentials systematically derived from gauge field-theoretic models. We inv…