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hep-ph2026
The Minimal High-Quality QCD Axion
Mario Fernández Navarro
The canonical QCD axion is minimal but not high quality. We identify a minimal high-quality QCD axion, in which the Peccei-Quinn symmetry emerges as a gauge-origin boundary remnant…
hep-ph2026
The structure of multi-axion solutions to the strong CP problem
Mario Fernández Navarro, Marta F. Zamoro, Marko Pesut +1
A broad experimental program is targeting the QCD axion band predicted by single-axion solutions to the strong CP problem. Multi-axion theories provide a well-motivated departure f…