2026-04-18T07:27:56Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2213202025-12-05T16:10:04Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

00925njm 22002777a 4500 dc Russo, J. G. (Jorge Guillermo) author Townsend, Paul K. author 2025-06-02T16:32:07Z 2025-06-02T16:32:07Z 2024 2025-06-02T16:32:07Z For any causal nonlinear electrodynamics theory that is “self-dual” (electromagnetic U(1)-duality invariant), the Legendre-dual pair of Lagrangian and Hamiltonian densities {L, H} are constructed from functions {ℓ, h} on R + related to a particle-mechanics Lagrangian and Hamiltonian. We show how a ‘duality’ relating ℓ to h implies that L and H are related by a simple map between appropriate pairs of variables. We also discuss Born’s “Legendre self-duality” and implications of a new “Φ-parity” duality. Our results are illustrated with many examples.  Electrodinàmica Camps de galga (Física) Electrodynamics Gauge fields (Physics) Dualities of self-dual nonlinear electrodynamics