De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety

D’Angelo E, Ferrero R, Fröb MB (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Classical and Quantum Gravity Institute of Physics: Hybrid Open Access

Book Volume: 42

Article Number: 125008

Journal Issue: 12

DOI: 10.1088/1361-6382/ade193

Abstract

Recent technical and conceptual advancements in the asymptotic safety approach to quantum gravity have enabled studies of the UV completion of Lorentzian Einstein gravity, emphasizing the role of the state dependence. We present here the first complete investigation of the flow equations of the Einstein-Hilbert action within a cosmological spacetime, namely de Sitter spacetime. Using the newly derived graviton propagator for general gauges and masses in de Sitter spacetime, we analyze the dependence on the gauge and on finite renormalization parameters. Our results provide evidence of a UV fixed point for the most commonly used gauges.

Authors with CRIS profile

Renata Ferrero Chair for Theoretical Physics III (Quantum Gravity)

Involved external institutions

Università degli studi di Milano IT Italy (IT) Universität Leipzig DE Germany (DE)

How to cite

APA:

D’Angelo, E., Ferrero, R., & Fröb, M.B. (2025). De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety. Classical and Quantum Gravity, 42(12). https://doi.org/10.1088/1361-6382/ade193

MLA:

D’Angelo, Edoardo, Renata Ferrero, and Markus B. Fröb. "De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety." Classical and Quantum Gravity 42.12 (2025).

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