Non-linear duality invariant partially massless models?

TL;DR

This paper introduces non-linear, duality-invariant equations of motion for partially massless higher spins, inspired by Maxwell-like formulations and resembling Dirac-Born-Infeld theory, though their Lagrangian nature remains uncertain.

Contribution

It proposes a novel non-linear, duality-invariant framework for partially massless higher spins based on a first-order formulation.

Findings

Models are manifestly duality invariant and non-linear.

The equations mimic Dirac-Born-Infeld theory.

Lagrangian formulation of the models is uncertain.

Abstract

We present manifestly duality invariant, non-linear, equations of motion for maximal depth, partially massless higher spins. These are based on a first order, Maxwell-like formulation of the known partially massless systems. Our models mimic Dirac-Born-Infeld theory but it is unclear whether they are Lagrangian.