The Operational Meaning of Total Energy of Isolated Systems in General Relativity
arXiv:2409.06698 · doi:10.3390/universe10090367
Abstract
We present thought experiments to measure the Arnowitt-Deser-Misner and Bondi-Sachs energy of isolated systems in general relativity. The expression of the Bondi-Sachs energy used in the protocol is likely to have other applications. In particular, it is well-suited to to be promoted to an operator in non-perturbative loop quantum gravity.
Written in honor of Jorge Pullin on the occasion of his 60th birthday. 21 pages, 1 figure