Quantum-gravity-induced matter self-interactions in the asymptotic-safety scenario

• Verfasst von: Eichhorn, Astrid [VerfasserIn]
• Titel: Quantum-gravity-induced matter self-interactions in the asymptotic-safety scenario
• Verf.angabe: Astrid Eichhorn
• Fussnoten: Gesehen am 11.01.2018
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2012
• Band/Heft Quelle: (2012) Artikel-Nummer 1204.0965, 23 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 156706647X

Abstract

We investigate the high-energy properties of matter theories coupled to quantum gravity. Specifically, we show that quantum gravity fluctuations generically induce matter self-interactions in a scalar theory. Our calculations apply within asymptotically safe quantum gravity, where our results indicate that the UV is dominated by an interacting fixed point, with non-vanishing gravitational as well as matter couplings. In particular, momentum-dependent scalar self-interactions are non-zero and induce a non-vanishing momentum-independent scalar potential. Furthermore we point out that terms of this type can have observable consequences in the context of scalar-field driven inflation, where they can induce potentially observable non-Gaussianities in the CMB.