254 citations · 1.8k across the 51 of their papers we have counts for
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hep-ph2019★ 19 cited
Stochastic inflation with an extremely large number of -folds
Naoya Kitajima, Yuichiro Tada, Fuminobu Takahashi
We propose a class of single-field, slow-roll inflation models in which a typical number of -folds can be extremely large. The key point is to introduce a very shallow local min…
astro-ph.CO2019★ 27 cited
Efficient self-resonance instability from axions
Hayato Fukunaga, Naoya Kitajima, Yuko Urakawa
It was recently shown that a coherent oscillation of an axion can cause an efficient parametric resonance, leading to a prominent emission of the gravitational waves (GWs). In this…