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arXiv · 2504.01467

Causal chiral 2-form electrodynamics

Jorge G. Russo·Paul K. Townsend
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Abstract

Generic nonlinear theories of chiral 2-form electrodynamics allow superluminal propagation in some stationary homogeneous backgrounds and are therefore acausal. We find a simple parameterisation of the Hamiltonian for causal theories, and we use it to show that the stress-energy tensor satisfies both the Dominant and Strong energy conditions. We also revisit the Perry-Schwarz formulation, clarifying aspects of it and of its relation to the Hamiltonian formulation.

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Jorge G. Russo, Paul K. Townsend. 2025-04-02. Causal chiral 2-form electrodynamics. https://arxiv.org/abs/2504.01467

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