Noetherian Conservation Laws for Photons
arXiv:2503.03271
Abstract
We review the formulation of a Lorentz-covariant bispinorial wave function and wave equation for a single photon on a flat background. We show the existence of a 10-dimensional set of conservation laws for this equation, and prove that 8 of these can be used to obtain global, gauge-invariant, ADM-like quantities that together define a covariantly constant self-dual bispinor.
22 pages. Corrected version. Dedicated to Tom Sideris on the occasion of his 70th birthday