Nonminimal hints for asymptotic safety

A. Eichhorn, S. Lippoldt, V. Skrinjar

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

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.

OriginalsprogEngelsk
Artikelnummer026002
TidsskriftPhysical Review D
Vol/bind97
Udgave nummer2
ISSN2470-0010
DOI
StatusUdgivet - 8. jan. 2018
Udgivet eksterntJa

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