On fixed points of quantum gravity

Details On fixed points of quantum gravity On fixed points of quantum gravity

2006-06-06

arxiv.org/abs/hep-th/0606044v1

Physics

High Energy Physics

High Energy Physics - Theory

Long contribution, presented at 28th Spanish Relativity Meeting (ERE05): A Century of Relativity Physics, Oviedo, Asturias, Sp

Scientific paper

10.1063/1.2218188

We study the short distance behaviour of euclidean quantum gravity in the light of Weinberg's asymptotic safety scenario. Implications of a non-trivial ultraviolet fixed point are reviewed. Based on an optimised renormalisation group, we provide analytical flow equations in the Einstein-Hilbert truncation. A non-trivial ultraviolet fixed point is found for arbitrary dimension. We discuss a bifurcation pattern in the spectrum of eigenvalues at criticality, and the large dimensional limit of quantum gravity. Implications for quantum gravity in higher dimensions are indicated.

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