Coloured gravitational instantons, the strong CP problem and the companion axion solution

Coloured gravitational instantons, the strong CP problem and the companion axion solution

Abstract Quantum gravity introduces a new source of the combined parity (CP) violation in gauge theories. We argue that this new CP violation gets bundled with the strong CP violation through the coloured gravitational instantons. Consequently, the standard axion solution to the strong CP problem is...

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Bibliographic Details
Main Authors: Zhe Chen, Archil Kobakhidze
Format: Article
Language:English
Published: SpringerOpen 2022-07-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-022-10542-3

Internet

https://doi.org/10.1140/epjc/s10052-022-10542-3

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