Constraints on discrete global symmetries in quantum gravity
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-perturbativ...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
05 May 2021
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| In: |
Journal of high energy physics
Year: 2021, Heft: 5, Pages: 1-33 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP05(2021)036 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP05(2021)036
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| Verfasserangaben: | Passant Ali, Astrid Eichhorn, Martin Pauly and Michael M. Scherer |
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| 520 | |a 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. | ||
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