Curvature dependence of quantum gravity

• Verfasst von: Christiansen, Nicolai [VerfasserIn]
• Verfasst von: Falls, Kevin [VerfasserIn]
• Verfasst von: Pawlowski, Jan M. [VerfasserIn]
• Verfasst von: Reichert, Manuel [VerfasserIn]
• Titel: Curvature dependence of quantum gravity
• Verf.angabe: Nicolai Christiansen, Kevin Falls, Jan M. Pawlowski, and Manuel Reichert
• E-Jahr: 2018
• Jahr: 15 February 2018
• Umfang: 18 S.
• Fussnoten: Gesehen am 11.11.2020
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2018
• Band/Heft Quelle: 97(2018,4) Artikel-Nummer 046007, 18 Seiten
• ISSN Quelle: 2470-0029
• DOI: doi:10.1103/PhysRevD.97.046007
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 157062741X

Abstract

We investigate the phase diagram of quantum gravity with a vertex expansion about constantly-curved backgrounds. The graviton two- and three-point function are evaluated with a spectral sum on a sphere. We obtain, for the first time, curvature-dependent UV fixed point functions of the dynamical fluctuation couplings g∗(R), μ∗(R), and λ∗3(R), and the background f(R)-potential. Based on these fixed point functions we compute solutions to the quantum and the background equation of motion with and without standard model matter. We have checked that the solutions are robust against changes of the truncation.