Constraints on discrete global symmetries in quantum gravity

• Verfasst von: Ali, Passant [VerfasserIn]
• Verfasst von: Eichhorn, Astrid [VerfasserIn]
• Verfasst von: Pauly, Martin [VerfasserIn]
• Verfasst von: Scherer, Michael [VerfasserIn]
• Titel: Constraints on discrete global symmetries in quantum gravity
• Verf.angabe: Passant Ali, Astrid Eichhorn, Martin Pauly and Michael M. Scherer
• E-Jahr: 2021
• Jahr: 05 May 2021
• Umfang: 33 S.
• Fussnoten: Gesehen am 11.08.2022
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2021
• Band/Heft Quelle: (2021), 5, Artikel-ID 36, Seite 1-33
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP05(2021)036
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Discrete Symmetries
• Sach-SW: Global Symmetries
• Sach-SW: Models of Quantum Gravity
• K10plus-PPN: 181413705X

Abstract

The question whether global symmetries can be realized in quantum-gravity-matter-systems has far-reaching phenomenological consequences. Here, we collect evidence that within an asymptotically safe context, discrete global symmetries of the form ℤn, n > 4, cannot be realized in a near-perturbative regime. In contrast, an effective-field-theory approach to quantum gravity might feature such symmetries, providing a mechanism to generate mass hierarchies in the infrared without the need for additional fine-tuning.