Renormalized Functional Renormalization Group

Abstract

We construct a new version of the effective average action together with its flow equation. The construction entails in particular the consistency of fluctuation field and background field equations of motion, even for finite renormalization group scales. Here we focus on the quantum gravity application, while the generalization of this idea to gauge theories is obvious. Our approach has immediate impact on the background field approximation, which is the most prominent approximation scheme within the asymptotic safety scenario. We outline the calculation of quantum gravity observables from first principles using the new effective average action.

arXiv comment5+1 pages

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Cited by in corpus (9)

• Quantum gravity: a fluctuating point of view
• Asymptotic safety and field parametrization dependence in the f(R) truncation
• Lorentz symmetry is relevant
• Asymptotically Safe $f(R)$-Gravity Coupled to Matter II: Global Solutions
• Asymptotically Safe Gravity with Fermions
• Lessons from conformally reduced quantum gravity
• BRST invariant RG flows
• Limit of vanishing regulator in the functional renormalization group
• Physics-informed operator flows and observables