Quantum gravity slows inflation

1996/02/29 by N. C. Tsamis, N.C. Tsamis, R. P. Woodard +1 · 12 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1016/0550-3213(96)00246-5

published as Nucl.Phys.B474:235-248,1996 · 19 pages, plain TeX, 1 Postscript file, uses psfig.sty, revised June 1996 for publication in Nuclear Physics B

openalex publication_date 1996/08/01 · arxiv created 1996/10/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

We consider the quantum gravitational back-reaction on an initially inflating, homogeneous and isotropic universe whose topology is T³ × \Re. Although there is no secular effect at one loop, an explicit calculation shows that two-loop processes act to slow the rate of expansion by an amount which becomes non-perturbatively large at late times. By exploiting Feynman's tree theorem we show that all higher loops act in the same sense.

Citations

• Stability of gravity with a cosmological constant

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• The Cosmological Constant