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Asymptotic safety in higher-derivative gravity

Authors
Type
Published Article
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Submission Date
Identifiers
DOI: 10.1142/S0217732309031521
Source
arXiv
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Yellow
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Abstract

We study the non-perturbative renormalization group flow of higher-derivative gravity employing functional renormalization group techniques. The non-perturbative contributions to the $\beta$-functions shift the known perturbative ultraviolet fixed point into a non-trivial fixed point with three UV-attractive and one UV-repulsive eigendirections, consistent with the asymptotic safety conjecture of gravity. The implication of this transition on the unitarity problem, typically haunting higher-derivative gravity theories, is discussed.

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