Asymptotically Safe Inflation
High Energy Physics - Theory
2010-05-12 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
Inflation is studied in the context of asymptotically safe theories of gravitation. Conditions are explored under which it is possible to have a long period of nearly exponential expansion that eventually comes to an end.
Keywords
Cite
@article{arxiv.0911.3165,
title = {Asymptotically Safe Inflation},
author = {Steven Weinberg},
journal= {arXiv preprint arXiv:0911.3165},
year = {2010}
}
Comments
17 pages. An added footnote discusses the problem of ghost poles in these theories, and an added section applies the general results of the paper to actions with no more than four spacetime derivatives. Version accepted for publication in Physical Review D.