A simple expression for the ADM mass

Abstract

We show by an almost elementary calculation that the ADM mass of an asymptotically flat space can be computed as a limit involving a rate of change of area of a closed 2-surface. The result is essentially the same as that given by Brown and York. We will prove this result in two ways, first by direct calculation from the original formula as given by Arnowitt, Deser and Misner and second as a corollary of an earlier result by Brewin for the case of simplicial spaces.

9 pages, 1 figure

References in corpus (2)

• Quasilocal Energy and Conserved Charges Derived from the Gravitational Action
• Energy of Isolated Systems at Retarded Times as the Null Limit of Quasilocal Energy

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