Asymptotically free scalar curvature-ghost coupling in quantum Einstein gravity

• Verfasst von: Eichhorn, Astrid [VerfasserIn]
• Verfasst von: Gies, Holger [VerfasserIn]
• Verfasst von: Scherer, Michael [VerfasserIn]
• Titel: Asymptotically free scalar curvature-ghost coupling in quantum Einstein gravity
• Verf.angabe: Astrid Eichhorn, Holger Gies, and Michael M. Scherer
• E-Jahr: 2009
• Jahr: 5 November 2009
• Umfang: 8 S.
• Fussnoten: Gesehen am 25.02.2020
• Titel Quelle: Enthalten in: Physical review / D
• Ort Quelle: [S.l.] : Soc., 1970
• Jahr Quelle: 2009
• Band/Heft Quelle: 80(2009,10) Artikel-Nummer 104003, 8 Seiten
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevD.80.104003
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1569735662

Abstract

We consider the asymptotic-safety scenario for quantum gravity which constructs a nonperturbatively renormalizable quantum gravity theory with the help of the functional renormalization group (RG). We verify the existence of a non-Gaussian fixed point and include a running curvature-ghost coupling as a first step towards the flow of the ghost sector of the theory. We find that the scalar curvature-ghost coupling is asymptotically free and RG relevant in the ultraviolet. Most importantly, the property of asymptotic safety discovered so far within the Einstein-Hilbert truncation and beyond remains stable under the inclusion of the ghost flow.