Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?
High Energy Physics - Theory
2008-11-26 v2 Astrophysics
General Relativity and Quantum Cosmology
Abstract
This is a sequel to a previous detailed study of quantum corrections to cosmological correlations. It was found there that except in special cases these corrections depend on the whole history of inflation, not just on the behavior of fields at horizon exit. It is shown here that at least in perturbation theory these corrections can nevertheless not be proportional to positive powers of the Robertson--Walker scale factor, but only at most to powers of its logarithm, and are therefore never large.
Keywords
Cite
@article{arxiv.hep-th/0605244,
title = {Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?},
author = {Steven Weinberg},
journal= {arXiv preprint arXiv:hep-th/0605244},
year = {2008}
}
Comments
10 pages. Some explanations and references added. Paper now accepted for publication in Physical Review