Extended theories of electrodynamics in f ( R ) gravity
Year: 2026
Type: article
Abstract: Within the general framework of f ( R ) gravity, we introduce a function of the electromagnetic curvature invariant f ( F ) that couples minimally to gravitation to ensure a consistent treatment of curvature functions in these theories. We show that one of the solutions leads to field equations that are a generalization of the Klein–Gordon equation while the other leads to a typically non-linear massless solution. Focusing on flat spacetime, our formalism recovers the Plebanski family of models and Bopp–Podolsky electrodynamics as specific limits. These extensions may have phenomenological consequences in extreme environments, such as the early universe or near charged compact objects, where deviations from classical electrodynamics might be probed.
Source: Annals of Physics
Authors: Francesco Bajardi, Micol Benetti, Salvatore Capozziello, Abedennour Dib
Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Scuola Superiore Meridionale, University of Naples Federico II, Université d'Orléans, Centre National de la Recherche Scientifique, Université Paris Sciences et Lettres, Centre National d'Études Spatiales, Observatoire de Paris, Laboratoire de Physique et Chimie de l’Environnement et de l’Espace, Observatoire des sciences de l'Univers en région Centre Val de Loire
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,160
OpenAlex ID: W7136190534