Universal derivation of the asymptotic charges of bosonic massless particles

TL;DR

This paper develops a unified framework for deriving asymptotic charges of bosonic massless particles across all spacetime dimensions, providing explicit formulas applicable to various theories including electromagnetism and gravity.

Contribution

It introduces master formulas for asymptotic charges and their algebraic extensions, applicable universally to bosonic massless particles in any spacetime dimension.

Findings

Unified formulas for asymptotic charges in diverse theories

Explicit evaluation method demonstrated on electromagnetism and gravity

Recovery of known results confirming the framework's validity

Abstract

We present a unified treatment of the conserved asymptotic charges associated with any bosonic massless particle in any spacetime dimension. In particular we provide master formulae for the asymptotic charges and the central extensions in the corresponding charge algebras. These formulae can be explicitly evaluated for any given theory. For illustration we apply them to electromagnetism and gravity, thereby recovering earlier results.