Ryo Saito

Affiliation and department：

Research field (1)： Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

Research keywords (2)： Theories of Gravitation , Cosmology

Research theme for competitive and other funds (6)：

2023 - 2027 超精密かつ多スケール・多粒子観測時代における相対論的宇宙論の確立と宇宙像の探求
2020 - 2025 Dark Matter in Quantum Gravity
2019 - 2022 Next-generation relativistic cosmology in the era of precision observations
2017 - 2022 Tests of gravity through the fifth force
2011 - 2014 宇宙進化に対する小スケール揺らぎの影響とその観測的検証

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Papers (33)：

Yuichiro Nakai, Ryo Namba, Ippei Obata, Yu-Cheng Qiu, Ryo Saito. Can we explain cosmic birefringence without a new light field beyond Standard Model?. Journal of High Energy Physics. 2024. 2024. 1
Atsushi Naruko, Ryo Saito, Norihiro Tanahashi, Daisuke Yamauchi. Ostrogradsky mode in scalar-tensor theories with higher-order derivative couplings to matter. Progress of Theoretical and Experimental Physics. 2023. 2023. 5
Zhen-Yuan Wu, Nobuyuki Sakai, Ryo Saito. Antipodal angular correlations of inflationary stochastic gravitational wave background. Physical Review D. 2023. 107. 2
Toshiya Namikawa, Atsushi Naruko, Ryo Saito, Atsushi Taruya, Daisuke Yamauchi. Unified approach to secondary effects on the CMB B-mode polarization. Journal of Cosmology and Astroparticle Physics. 2021. 2021. 10. 029-029
Tomohiro Nakamura, Taishi Ikeda, Ryo Saito, Norihiro Tanahashi, Chul-Moon Yoo. Dynamical analysis of screening in scalar-tensor theory. Physical Review D. 2021. 103. 2

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MISC (4)：

Katsuki Aoki, Toshifumi Noumi, Ryo Saito, Sota Sato, Satoshi Shirai, Junsei Tokuda, Masahito Yamazaki. Gravitational Positivity for Phenomenologists: Dark Gauge Boson in the Swampland. 2023
齊藤遼. 「インフレーションと原始重力波」~重力波でみる「宇宙のはじまり」~. 数理科学. 2018. 2018年12月号
Yokoyama Jun'ichi, Saito Ryo. 10aSE-5 Space Gravitational Wave Antenna DECIGO(21) : Its Science 1. Meeting abstracts of the Physical Society of Japan. 2009. 64. 2. 33-33
Saito Ryo, Nagata Ryo, Yokoyama Jun'ichi. 21pZK-6 Non-Gaussianity in a single inflation model. Meeting abstracts of the Physical Society of Japan. 2007. 62. 2. 101-101

Books (1)：

Lectures and oral presentations (87)：

Ostrogradsky mode in scalar-tensor theories with higher-order derivative couplings to matter
(The 32nd Workshop on General Relativity and Gravitation in Japan 2023)
Identifying the inflationary GW background in other stochastic signals
(「超精密かつ多スケール・多粒子観測時代における相対論的宇宙論の確立と宇宙像の探求」第1回ワークショップ 2023)
宇宙マイクロ波背景放射異方性の精密計算:非線形効果に対する統一的アプローチ
(慶應義塾大学 High Energy Physics Groupセミナー 2023)
Ostrogradsky mode in scalar-tensor theories with higher-order derivative couplings to matter
(2023)
Antipodal angular correlations of inflationary gravitational-wave background
(Non-linear Nature of Cosmological Perturbations and its Observational Consequences 2023)

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Education (2)：

Professional career (1)：

Work history (5)：

2022/04 - 現在 Yamaguchi University Graduate School of Sciences and Technology for Innovation
2017/04 - 2022/03 Yamaguchi University Graduate School of Sciences and Technology for Innovation Assistant Professor
2016/04 - 2017/03 Kyoto University Yukawa Institute for Theoretical Physics Research Assistant Professor
2014/04 - 2016/03 Université Paris Diderot Laboratory AstroParticle and Cosmology Researcher JSPS Postdoctoral Fellowship for Research Abroad
2011/04 - 2014/03 Kyoto University Yukawa Institute for Theoretical Physics JSPS Research Fellowships for Young Scientists (PD)

Association Membership(s) (2)：

理論天文学宇宙物理学懇談会 , THE PHYSICAL SOCIETY OF JAPAN

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