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Democratic Lagrangians for Nonlinear Electrodynamics

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arxiv 2108.01103 v2 pith:AKYRN4ZX submitted 2021-08-02 hep-th hep-phmath-phmath.MPphysics.class-phphysics.optics

Democratic Lagrangians for Nonlinear Electrodynamics

classification hep-th hep-phmath-phmath.MPphysics.class-phphysics.optics
keywords dualityelectrodynamicsformulationlagrangiannonlinearapproachbrieflycase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We construct a Lagrangian for general nonlinear electrodynamics that features electric and magnetic potentials on equal footing. In the language of this Lagrangian, discrete and continuous electric-magnetic duality symmetries can be straightforwardly imposed, leading to a simple formulation for theories with the $SO(2)$ duality invariance. When specialized to the conformally invariant case, our construction provides a manifestly duality-symmetric formulation of the recently discovered ModMax theory. We briefly comment on a natural generalization of this approach to $p$-forms in $2p+2$ dimensions.

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Cited by 4 Pith papers

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