The Incomprehensible Simplicity of PST

Abstract

There is a hearsay that the PST approach to the covariant Lagrangian description of relativistic duality invariant theories is somewhat complicated. I will show, using an example of a chiral two-form field theory in six space-time dimensions, that it is actually natural and very simple. It directly stems from the Hamiltonian formulation of chiral-form theories.

arXiv comment17 pages, contribution to the proceedings of the MATRIX workshop "New Deformations of Quantum Field and Gravity Theories", Creswick, Australia, Jan 22 - Feb 2, 2024. v2: added comments and explanation of simplicity of the PST variation principle, typos in formulas corrected, references added