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

Autor:	Chen, Zhe, Kobakhidze, Archil
Rok vydání:	2021
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1140/epjc/s10052-022-10542-3
Popis:	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 compromised. Further, we argue that the ultimate solution to the strong CP problem must involve at least one additional axion particle. Comment: 5 pages; v2: expanded discussion, to appear in EPJC
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2108.05549 Zobrazit plný text záznamu View this record from Arxiv