2015 - 2019 Investigating non-linear property of primordial fluctuations from future cosmological observations and probing the physics of the early Universe
2016 - 2018 複数場インフレーションモデルの検証に関する理論的研究
2012 - 2017 Study on the evolution of galaxies and the large scale structure through HI 21cm line observations
2012 - 2015 宇宙論的観測で探る初期揺らぎの非ガウス性と初期宇宙モデルの検証
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Papers (115):
Katsuya T. Abe, Ryoto Inui, Yuichiro Tada, Shuichiro Yokoyama. Primordial black holes and gravitational waves induced by exponential-tailed perturbations. Journal of Cosmology and Astroparticle Physics. 2023. 2023. 05. 044-044
Tomohiro Fujita, Yuto Minami, Maresuke Shiraishi, Shuichiro Yokoyama. Can primordial parity violation explain the observed cosmic birefringence?. Physical Review D. 2022. 106. 10
Yasutaka Koga, Tomohiro Harada, Yuichiro Tada, Shuichiro Yokoyama, Chul-Moon Yoo. Effective Inspiral Spin Distribution of Primordial Black Hole Binaries. The Astrophysical Journal. 2022
Yukiyoshi Morishita, Tomo Takahashi, Shuichiro Yokoyama. Multi-chaotic inflation with and without spectator field. Journal of Cosmology and Astroparticle Physics. 2022. 2022. 07. 042-042
LIGO Detected Primordial Black Holes?. 2017. 72. 10. 723-727
Kenji Hasegawa, Shinsuke Asaba, Kiyotomo Ichiki, Akio K. Inoue, Susumu Inoue, Tomoaki Ishiyama, Hayato Shimabukuro, Keitaro Takahashi, Hiroyuki Tashiro, Hidenobu Yajima, et al. Japanese Cosmic Dawn/Epoch of Reionization Science with the Square Kilometre Array. 2016
島袋隼士, 吉浦伸太郎, 高橋慶太郎, 横山修一郎, 市來淨與. Studying 21cm power spectrum with one-point statistics. 日本天文学会年会講演予稿集. 2015. 2015
Inoue Susumu, Shimabukuro Hayato, Ichiki Kiyotomo, Yokoyama Shuichiro. 27aBB-6 Probing the Small-Scale Power Spectrum of Cosmic Primordial Density Fluctuations through the High-Redshift 21cm Forest. Meeting abstracts of the Physical Society of Japan. 2013. 68. 1. 129-129