152 citations · 1.9k across the 51 of their papers we have counts for
Showing 2021 · hep-phShow all
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hep-ph2021★ 31 cited
Axion-Gauge Field Dynamics with Backreaction
Koji Ishiwata, Eiichiro Komatsu, Ippei Obata
Phenomenological success of inflation models with axion and SU(2) gauge fields relies crucially on control of backreaction from particle production. Most of the previous study only…
hep-ph2021★ 2 cited
Subcritical hybrid inflation in a generalized superconformal model
Yoshihiro Gunji, Koji Ishiwata
We study a generalized superconformal model that gives rise to a subcritical regime of -term hybrid inflation. Exhibiting the model both in a Jordan frame and in the Einstein fr…
hep-ph2021★ 6 cited
Axion mass in antiferromagnetic insulators
Koji Ishiwata
We calculate axion potential in antiferromagnetic insulators from path integral. It is derived from the effective potential for the order parameter of the antiferromagnetic phase i…