101 citations · 586 across the 25 of their papers we have counts for
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hep-th2021★ 5 cited
Spiky strings in de Sitter space
Mitsuhiro Kato, Kanji Nishii, Toshifumi Noumi +2
We study semiclassical spiky strings in de Sitter space and the corresponding Regge trajectories, generalizing the analysis in anti-de Sitter space. In particular we demonstrate th…
hep-th2021★ 15 cited
Perturbative unitarity in quasi-single field inflation
Suro Kim, Toshifumi Noumi, Keito Takeuchi +1
We study implications of perturbative unitarity for quasi-single field inflation with the inflaton and one massive scalar. Analyzing high energy scattering, we show that non-Gaussi…