Implications of gravitational instantons for the strong CP problem and axions

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Field	Value	Language
dc.contributor.author	Chen, Zhe
dc.date.accessioned	2024-02-27T03:46:00Z
dc.date.available	2024-02-27T03:46:00Z
dc.date.issued	2024	en
dc.identifier.uri	https://hdl.handle.net/2123/32262
dc.description.abstract	We have proposed an extension of the standard Peceei-Quinn mechanism to provide a genuine solution to the strong CP problem. This extension introduces an additional axion field, a companion to the standard QCD axion. Our model offers a rich and interesting phenomenology that is studied in this thesis. In particular by reviewing constraints on axionphoton couplings, quite remarkably we find that future axion searches with haloscopes and helioscopes may well discover two QCD axions, perhaps even within the same experiment.	en
dc.language.iso	en	en
dc.rights	Copyright All Rights Reserved	en
dc.subject	theoretical physics	en
dc.subject	particle physics	en
dc.subject	instanton	en
dc.subject	axion	en
dc.subject	cosmology	en
dc.title	Implications of gravitational instantons for the strong CP problem and axions	en
dc.type	Thesis
dc.type.thesis	Doctor of Philosophy	en
dc.rights.other	The author retains copyright of this thesis. It may only be used for the purposes of research and study. It must not be used for any other purposes and may not be transmitted or shared with others without prior permission.	en
usyd.faculty	SeS faculties schools::Faculty of Science::School of Physics	en
usyd.degree	Doctor of Philosophy Ph.D.	en
usyd.awardinginst	The University of Sydney	en
usyd.advisor	Kobakhidze, Archil	en