Invariant measure of the one-loop quantum gravitational backreaction on inflation

S. P. Miao, N. C. Tsamis, R. P. Woodard

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We use dimensional regularization in pure quantum gravity on a de Sitter background to evaluate the one-loop expectation value of an invariant operator which gives the local expansion rate. We show that the renormalization of this nonlocal composite operator can be accomplished using the counterterms of a simple local theory of gravity plus matter, at least at one-loop order. This renormalization completely absorbs the one-loop correction, which accords with the prediction that the lowest secular backreaction should be a two-loop effect.

Original languageEnglish
JournalPhysical Review D
Volume95
Issue number12
DOIs
Publication statusPublished - 2017 Jun 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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