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
• Jahr: 2017
• Umfang: 13 S.
• Fussnoten: Gesehen am 11.01.2018
• Titel Quelle: Enthalten in: De.arxiv.org
• Ort Quelle: [S.l.] : Arxiv.org, 1991
• Jahr Quelle: 2017
• Band/Heft Quelle: (2017) Artikel-Nummer 1710.03005, 13 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: High Energy Physics - Theory
• Sach-SW: General Relativity and Quantum Cosmology
• K10plus-PPN: 1567049958

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.