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Four-derivative interactions in asymptotically safe gravity

We summarize recent progress in understanding the role of higher-derivative terms in the asymptotic safety scenario of gravity. Extending previous computations based on the functional renormalization group approach by including a Weyl-squared term in the ansatz for the effective action, further evidence for the existence of a non-Gaussian fixed point is found. The fixed point also persists upon including a minimally coupled free scalar field, providing an explicit example of perturbative counterterms being non-hazardous for asymptotic safety.

preprint2009arXivOpen access
Dario BenedettiPedro F. MachadoFrank Saueressig
hep-th
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Dario BenedettiPedro F. MachadoFrank Saueressig

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