Graviton Propagator in a General Invariant Gauge on de Sitter
General Relativity and Quantum Cosmology
2015-06-05 v1
Abstract
We construct the graviton propagator on de Sitter background in the one parameter family of exact, de Sitter invariant gauges. Our result takes the form of a universal spin two part and a gauge dependent spin zero part. Scalar equations are derived for the structure functions of each part. There is no de Sitter invariant solution for either structure function, although the de Sitter breaking contribution to the spin zero part may drop out for certain choices of the gauge parameter. Our results imply that de Sitter breaking is universal for the graviton propagator, and hence that there is an error in the contrary results derived by analytic continuation of average gauge fixing techniques.
Keywords
Cite
@article{arxiv.1205.4468,
title = {Graviton Propagator in a General Invariant Gauge on de Sitter},
author = {P. J. Mora and N. C. Tsamis and R. P. Woodard},
journal= {arXiv preprint arXiv:1205.4468},
year = {2015}
}
Comments
Uses Latex2e, 20 pages, no figures, no tables