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arXiv · hep-th/0110021

Is Quantum Einstein Gravity Nonperturbatively Renormalizable?

O. Lauscher·M. Reuter
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Abstract

We find considerable evidence supporting the conjecture that four-dimensional Quantum Einstein Gravity is ``asymptotically safe'' in Weinberg's sense. This would mean that the theory is likely to be nonperturbatively renormalizable and thus could be considered a fundamental (rather than merely effective) theory which is mathematically consistent and predictive down to arbitrarily small length scales. For a truncated version of the exact flow equation of the effective average action we establish the existence of a non-Gaussian renormalization group fixed point which is suitable for the construction of a nonperturbative infinite cutoff-limit. The truncation ansatz includes the Einstein-Hilbert action and a higher derivative term.

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O. Lauscher, M. Reuter. 2001-10-02. Is Quantum Einstein Gravity Nonperturbatively Renormalizable?. https://doi.org/10.1088/0264-9381%2F19%2F3%2F304

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