From the 2 of 17 linked papers with an AI index.
17 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…
Induced CFJ Term in nonlocal Lorentz-Violating QED: Natural Regularization from Entire Dirac Operators
J. R. Nascimento, A. Yu. Petrov, P. J. Porfirio +1
The paper examines how the Carroll‑Field‑Jackiw term is radiatively generated in a Lorentz‑violating, nonlocal extension of quantum electrodynamics, showing that nonlocal form fact…
Rotating black hole shadows in metric-affine bumblebee gravity
Jose R. Nascimento, Ana R. M. Oliveira, Albert Yu. Petrov +3
In this work, we investigate the structure of black hole shadows in the bumblebee gravity model formulated within the metric-affine framework, which incorporates spontaneous Lorent…
Nonrotating and rotating black holes with secondary disformal hair in a ghost-free metric-affine parity-violating scalar-torsion theory
E. Brito, G. Macedo, J. R. Nascimento +2
In this paper, we formulate a ghost-free metric-affine scalar-torsion model in which a pseudoscalar field is coupled to the Nieh--Yan density and derivatively coupled to the Einste…
One-loop contributions in Lorentz-violating scalar QED with nonminimal coupling
F. M. Belchior, J. R. Nascimento, A. Yu. Petrov +1
In the context of pertubative aspects of Lorentz-violating theories, we study the divergent one-loop two-point functions of a Lorentz-violating (LV) extension of scalar QED contain…
Nonrelativistic effective potential of the bumblebee model
C. Furtado, J. R. Nascimento, A. Yu. Petrov +1
In this paper, we explicitly obtain the nonrelativistic Breit potential in the bumblebee model arising in the weak gravity limit of the metric-affine bumblebee gravity, coupled to…