Nonminimal hints for asymptotic safety

• Verfasst von: Eichhorn, Astrid [VerfasserIn]
• Verfasst von: Lippoldt, Stefan [VerfasserIn]
• Verfasst von: Skrinjar, Vedran [VerfasserIn]
• Titel: Nonminimal hints for asymptotic safety
• Verf.angabe: Astrid Eichhorn, Stefan Lippoldt, and Vedran Skrinjar
• E-Jahr: 2018
• Jahr: 8 January 2018
• Umfang: 14 S.
• Fussnoten: Gesehen am 15.12.2020
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2018
• Band/Heft Quelle: 97(2018,2) Artikel-Nummer 026002, 14 Seiten
• ISSN Quelle: 2470-0029
• DOI: doi:10.1103/PhysRevD.97.026002
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1570765227

Abstract

In the asymptotic-safety scenario for gravity, nonzero interactions are present in the ultraviolet. This property should also percolate into the matter sector. Symmetry-based arguments suggest that nonminimal derivative interactions of scalars with curvature tensors should therefore be present in the ultraviolet regime. We perform a nonminimal test of the viability of the asymptotic-safety scenario by working in a truncation of the renormalization group flow, where we discover the existence of an interacting fixed point for a corresponding nonminimal coupling. The back-coupling of such nonminimal interactions could in turn destroy the asymptotically safe fixed point in the gravity sector. As a key finding, we observe nontrivial indications of stability of the fixed-point properties under the impact of nonminimal derivative interactions, further strengthening the case for asymptotic safety in gravity-matter systems.