Axiomatic geometrical optics, Abraham-Minkowski controversy, and photon properties derived classically

TL;DR

This paper reformulates geometrical optics within a field-theoretical framework to define photon properties unambiguously, resolving longstanding debates like the Abraham-Minkowski controversy and deriving corrected energy-momentum expressions.

Contribution

It introduces a first-principles approach to photon properties in dispersive media and resolves the Abraham-Minkowski controversy within this formalism.

Findings

Unambiguous definitions of photon canonical and kinetic momenta.

Resolution of the Abraham-Minkowski controversy for linear waves.

Derivation of corrected formulas for photon energy-momentum tensors.

Abstract

By restating geometrical optics within the field-theoretical approach, the classical concept of a photon (and, more generally, any elementary excitation) in arbitrary dispersive medium is introduced, and photon properties are calculated unambiguously. In particular, the canonical and kinetic momenta carried by a photon, as well as the two corresponding energy-momentum tensors of a wave, are derived from first principles of Lagrangian mechanics. As an example application of this formalism, the Abraham-Minkowski controversy pertaining to the definitions of these quantities is resolved for linear waves of arbitrary nature, and corrections to the traditional formulas for the photon kinetic energy-momentum are found. Several other applications of axiomatic geometrical optics to electromagnetic waves are also presented.