Asymptotic Symmetries and Charges in De Sitter Space
General Relativity and Quantum Cosmology
2011-08-22 v1 High Energy Physics - Theory
Abstract
The asymptotic symmetry group (ASG) at future null infinity (I^+) of four-dimensional de Sitter spacetimes is defined and shown to be given by the group of three-dimensional diffeomorphisms acting on I^+. Finite charges are constructed for each choice of ASG generator together with a two-surface on I^+. A conservation equation is derived relating the evolution of the charges with the radiation flux through I^+.
Keywords
Cite
@article{arxiv.1009.4730,
title = {Asymptotic Symmetries and Charges in De Sitter Space},
author = {Dionysios Anninos and Gim Seng Ng and Andrew Strominger},
journal= {arXiv preprint arXiv:1009.4730},
year = {2011}
}
Comments
16 pages, 1 figure