2026-04-17T05:30:35Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/2206482025-12-05T16:14:32Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917
RECERCAT
author
Mezincescu, Luca
author
Russo, J. G. (Jorge Guillermo)
author
Townsend, Paul K.
2025-04-25T16:17:56Z2025-04-25T16:17:56Z20242025-04-25T16:17:56Z
Abstract: Using Hamiltonian methods, we fnd six relativistic theories of nonlinear electrodynamics for which plane wave perturbations about a constant uniform background are not birefringent. All have the same conformal strong-feld limit to Bialynicki-Birula (BB) electrodynamics, but only four avoid superluminal propagation: Born-Infeld (BI), its non-conformal “extreme” limits (electric and magnetic) and the conformal BB limit. The quadratic dispersion relation of BI is shown to degenerate in the extreme limits to a pair of linear relations, which become identical in the BB limit.
cc-by (c) Mezincescu, L. et al., 2024 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess
Sistemes hamiltonians
Teoria de camps (Física)
Electrodinàmica
Hamiltonian systems
Field theory (Physics)
Electrodynamics
Hamiltonian birefringence and Born-Infeld limits
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion