2 papers
hep-ph2025
Towards a Post-Inflationary Composite Axion Model
Aleksandr Azatov, Mohamed Mahdi Khalil, Motoo Suzuki
Composite axions offer a scenario where the axion emerges as a pion-like state, avoiding fine-tuning of elementary scalars and ameliorating the axion quality problem. Despite these…
hep-ph2025
Small Instantons and the Post-Inflationary QCD Axion in a Special Product GUT
Shihwen Hor, Yuichiro Nakai, Motoo Suzuki +1
We present a new framework of grand unification that is equipped with an axion solution to the strong CP problem without a domain wall problem when the Peccei-Quinn (PQ) symmetry i…