Quasi-local definitions of energy in general relativity

TL;DR

This paper reviews the challenge of defining energy in general relativity and discusses properties of Brown-York-like energy expressions, highlighting their significance in understanding gravitational energy.

Contribution

It provides a concise review of quasi-local energy definitions in general relativity, focusing on Brown-York-like expressions and their properties.

Findings

Brown-York-like energy expressions have desirable properties.

Quasi-local energy definitions help address the energy localization problem.

The paper clarifies the role of these expressions in gravitational energy understanding.

Abstract

The problem of defining energy in general relativity is reviewed very briefly, and the properties of Brown-York-like expressions are discussed.