A graviton propagator for inflation
General Relativity and Quantum Cosmology
2009-11-13 v1
Abstract
We construct the scalar and graviton propagator in quasi de Sitter space up to first order in the slow roll parameter . After a rescaling, the propagators are similar to those in de Sitter space with an correction to the effective mass. The limit corresponds to the E(3) vacuum that breaks de Sitter symmetry, but does not break spatial isotropy and homogeneity. The new propagators allow for a self-consistent, dynamical study of quantum back-reaction effects during inflation.
Keywords
Cite
@article{arxiv.0707.3919,
title = {A graviton propagator for inflation},
author = {Tomas Janssen and Tomislav Prokopec},
journal= {arXiv preprint arXiv:0707.3919},
year = {2009}
}
Comments
23 pages