Asymptotic symmetries at null infinity and local conformal properties of spin coefficients
General Relativity and Quantum Cosmology
2013-01-30 v1 High Energy Physics - Theory
Abstract
We show that the symmetry algebra of asymptotically flat four dimensional spacetimes at null infinity in the sense of Newman and Unti is isomorphic to the direct sum of the abelian algebra of infinitesimal conformal rescalings with bms4. We then work out the local conformal properties of the relevant Newman-Penrose coefficients, as well as the surface charges and their algebra.
Keywords
Cite
@article{arxiv.1301.5754,
title = {Asymptotic symmetries at null infinity and local conformal properties of spin coefficients},
author = {Glenn Barnich and Pierre-Henry Lambert},
journal= {arXiv preprint arXiv:1301.5754},
year = {2013}
}
Comments
6 pages latex file, conference proceedings