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Hamiltonian birefringence and Born-Infeld limits

Published version
Peer-reviewed

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Authors

Mezincescu, Luca 
Russo, Jorge G. 
Townsend, Paul K. 

Abstract

Using Hamiltonian methods, we find 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-field 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.

Description

Acknowledgements: PKT has been partially supported by the STFC consolidated grant ST/T000694/1. JGR acknowledges financial support from grants 2021-SGR-249 (Generalitat de Catalunya) and MINECO PID2019-105614GB-C21.

Keywords

Duality in Gauge Field Theories, Effective Field Theories, D-Branes

Journal Title

Journal of High Energy Physics

Conference Name

Journal ISSN

1029-8479

Volume Title

2024

Publisher

Springer Berlin Heidelberg