English

Causality and Energy Conditions in Nonlinear Electrodynamics

High Energy Physics - Theory 2024-04-16 v1

Abstract

For the general theory of nonlinear electrodynamics (NLED), we prove that causality implies both the Dominant Energy Condition (DEC) and, surprisingly, the Strong Energy Condition (SEC). This has implications for gravitational applications, such as regular black holes supported by NLED matter. For self-dual NLED theories, weak-field causality alone implies both the DEC and SEC, as we illustrate with Born-Infeld and ModMax electrodynamics.

Cite

@article{arxiv.2404.09994,
  title  = {Causality and Energy Conditions in Nonlinear Electrodynamics},
  author = {Jorge G. Russo and Paul K. Townsend},
  journal= {arXiv preprint arXiv:2404.09994},
  year   = {2024}
}

Comments

14 pages

R2 v1 2026-06-28T15:54:55.634Z