Constraints on discrete global symmetries in quantum gravity

Passant Ali, Astrid Eichhorn, Martin Pauly*, Michael M. Scherer

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Abstrakt

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.

OriginalsprogEngelsk
Artikelnummer36
TidsskriftJournal of High Energy Physics
Vol/bind2021
Udgave nummer5
Antal sider34
ISSN1126-6708
DOI
StatusUdgivet - maj 2021

Bibliografisk note

Publisher Copyright:
© 2021, The Author(s).

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