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oai:recercat.cat:2445/2206482025-12-05T16:14:32Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

Hamiltonian birefringence and Born-Infeld limits Mezincescu, Luca Russo, J. G. (Jorge Guillermo) Townsend, Paul K. Sistemes hamiltonians Teoria de camps (Física) Electrodinàmica Hamiltonian systems Field theory (Physics) Electrodynamics 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. 2025-04-25T16:17:56Z 2025-04-25T16:17:56Z 2024 2025-04-25T16:17:56Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1007/JHEP02(2024)186 Journal of High Energy Physics, 2024, vol. 2024, num.186 https://doi.org/10.1007/JHEP02(2024)186 cc-by (c) Mezincescu, L. et al., 2024 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Springer Verlag Articles publicats en revistes (Física Quàntica i Astrofísica)