TL;DR
This paper explores the implications of imperfect axions, focusing on additional CP violation sources and PQ symmetry breaking, challenging the notion of axions as an exact solution to the strong CP problem.
Contribution
It introduces a novel perspective on axion physics by considering imperfections in the axion solution to the strong CP problem, including new sources of CP violation and PQ symmetry breaking.
Findings
Identification of potential additional CP violation sources
Analysis of PQ symmetry breaking effects
Implications for axion-based solutions to the strong CP problem
Abstract
In this contribution, I'll discuss two classes of effects--additional sources of CP violation and PQ breaking--that offer a slightly different take on axion physics. Both are tied to the idea that the axion solution to the strong CP problem might not be exact, hence the title ``Imperfect Axions''.
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Taxonomy
TopicsDark Matter and Cosmic Phenomena · Particle physics theoretical and experimental studies · Astrophysics and Cosmic Phenomena