Critical reflections on asymptotically safe gravity

Journal
Date Issued
2022
Author(s)
•
Eichhorn, Astrid
•
Gies, Holger
•
Pawlowski, Jan M.
•
Percacci, Roberto
•
Reuter, Martin
•
Saueressig, Frank
•
Vacca, Gian Paolo
DOI
Abstract
Asymptotic safety is a theoretical proposal for the ultraviolet completion of quantum field theories, in particular for quantum gravity. Significant progress on this program has led to a first characterization of the Reuter fixed point. Further advancement in our understanding of the nature of quantumspacetime requires addressing a number of open questions and challenges. Here, we aim at providing a critical reflection on the state of the art in the asymptotic safety program, specifying and elaborating on open questions of both technical and conceptual nature. We also point out systematic pathways, in various stages of practical implementation, toward answering them. Finally, we also take the opportunity to clarify some common misunderstandings regarding the program.
Volume
8
Uri
Url
Issn Identifier
2296-424X
Rights
open.access
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