From the 1 of 10 linked papers with an AI index.
10 papers
Nonlocal four-fermion theory
F. M. Belchior, J. R. Nascimento, A. Yu. Petrov +1
The paper develops a nonlocal four‑fermion quantum field theory where the Dirac operator is modified by an entire nonlocal form factor, derives the mean‑field effective action and…
A novel nonlocal spin-1/2 theory: classical and quantum aspects
J. R. Nascimento, Gonzalo J. Olmo, A. Yu. Petrov +2
We propose a novel nonlocal spin-1/2 theory in which the form factor depends on the Dirac operator rather than on the d'Alembert operator. In this scenario, we explore some classic…
Modified Euler-Heisenberg effective action and Proper-Time Method in Lorentz-Violating Scalar QED
L. C. T. Brito, J. C. C. Felipe, A. C. Lehum +2
Quantum photon effects in vacuum provide an interesting setting to test quantum electrodynamics, serving as a source for predictions about physics beyond the Standard Model. In thi…
Gravitational lensing by a Lorentz-violating black hole
A. A. Araújo Filho, J. R. Nascimento, A. Yu. Petrov +1
In this work, we study the gravitational lensing by a Lorentz-violating (LV) black hole inspired by the recent contribution [1]. Explicitly, we concentrate on a specific applicatio…
Four-dimensional supersymmetric massive QED
A. C. Lehum, J. R. Nascimento, A. Yu. Petrov
We discuss the massive extension of the four-dimensional superfield QED. For this theory, we calculate the one-loop effective potential of the chiral matter.
Metric-affine bumblebee gravity: classical aspects
Adria Delhom, J. R. Nascimento, Gonzalo J. Olmo +2
We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metr…