Quantum Gravity: A Fluctuating Point of View

@inproceedings{Pawlowski2020QuantumGA,
  title={Quantum Gravity: A Fluctuating Point of View},
  author={Jan M. Pawlowski and Manuel Reichert},
  booktitle={Frontiers in Physics},
  year={2020}
}
In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a functional renormalization group approach that disentangles dynamical metric fluctuations from the background metric. We review the state of the art in pure gravity and general gravity–matter systems. This includes the discussion of results on the existence and properties of the asymptotically safe ultraviolet fixed point, full ultraviolet-infrared trajectories with classical gravity in the infrared, and… 

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TLDR
A critical reflection on the state of the art in the asymptotic safety program is provided, specifying and elaborating on open questions of both technical and conceptual nature and pointing out systematic pathways toward answering them.
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