Asymptotic gravitational charges

TL;DR

This paper introduces a method to identify all asymptotic gravitational charges by considering topological contributions, emphasizing the first order formalism for Hamiltonian derivations of dual charges.

Contribution

It provides a systematic approach to find all asymptotic gravitational charges, including dual charges, using the first order formalism and topological terms.

Findings

Method can find all asymptotic gravitational charges

First order formalism is effective for this analysis

Provides Hamiltonian derivation of dual charges

Abstract

We present a method for finding, in principle, all asymptotic gravitational charges. The basic idea is that one must consider all possible contributions to the action that do not affect the equations of motion for the theory of interest; such terms include topological terms. As a result we observe that the first order formalism is best suited to an analysis of asymptotic charges. In particular, this method can be used to provide a Hamiltonian derivation of recently found dual charges.