☆ 4.4 Article

Trirefringence and the M5-brane

JOURNAL OF HIGH ENERGY PHYSICS (2023)

Nonlinear electrodynamics without birefringence

Jorge G. Russo et al.

Summary: All solutions to the no-birefringence conditions in nonlinear electrodynamics have been discovered. Along with the known Born-Infeld and Plebanski cases, a reverse Born-Infeld case and an extreme-Born-Infeld case have been found. Only Born-Infeld has a weak-field limit, and only Born-Infeld and extreme-Born-Infeld prevent superluminal propagation in constant electromagnetic backgrounds. However, all cases have a conformal strong-field limit that coincides with the strong-field limit of Born-Infeld as found by Bialynicki-Birula.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Physics, Particles & Fields

On p-form gauge theories and their conformal limits

Igor Bandos et al.

Summary: This paper clarifies the relationships between various formulations of nonlinear p-form electrodynamics, focusing on the duality invariant (2n - 1)-form electrodynamics and chiral 2n-form electrodynamics. It introduces a new family of chiral 2-form electrodynamics in D = 6 and shows the dimensional reduction relationship between weak-field limits and the ModMax generalization of Maxwell's equations. Additionally, it demonstrates the dimensional reduction of chiral 'strong-field' 2n-form electrodynamics to a new Sl(2; )-duality invariant theory of (2n - 1)-form electrodynamics for n > 1.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Multidisciplinary