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arXiv · hep-th/0507167

From Big Bang to Asymptotic de Sitter: Complete Cosmologies in a Quantum Gravity Framework

M. Reuter·F. Saueressig
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Abstract

Using the Einstein-Hilbert approximation of asymptotically safe quantum gravity we present a consistent renormalization group based framework for the inclusion of quantum gravitational effects into the cosmological field equations. Relating the renormalization group scale to cosmological time via a dynamical cutoff identification this framework applies to all stages of the cosmological evolution. The very early universe is found to contain a period of ``oscillatory inflation'' with an infinite sequence of time intervals during which the expansion alternates between acceleration and deceleration. For asymptotically late times we identify a mechanism which prevents the universe from leaving the domain of validity of the Einstein-Hilbert approximation and obtain a classical de Sitter era.

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M. Reuter, F. Saueressig. 2005-07-18. From Big Bang to Asymptotic de Sitter: Complete Cosmologies in a Quantum Gravity Framework. https://doi.org/10.1088/1475-7516%2F2005%2F09%2F012

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