Gravitational memory in the bulk
General Relativity and Quantum Cosmology
2020-05-26 v1 High Energy Physics - Theory
Abstract
A method for detecting gravitational memory is proposed. It makes use of ingoing null geodesics instead of timelike geodesics in the original formulation by Christodoulou. It is argued that the method is applicable in the bulk of a spacetime. In addition, it is shown that BMS symmetry generators in Newman-Unti gauge have an interpretation in terms of the memory effect. This generalises the connection between BMS supertranslations and gravitational memory, discovered by Strominger and Zhiboedov at null infinity, to the bulk.
Cite
@article{arxiv.1908.07505,
title = {Gravitational memory in the bulk},
author = {Henk Bart},
journal= {arXiv preprint arXiv:1908.07505},
year = {2020}
}