Presentations

Contributed (international)

  1. [To be] Stochastic View of Multifield Inflationary Scenario
    The 34th Workshop on General Relativity and Gravitation in Japan (JGRG34)
    Kyoto University, Kyoto, Japan
    Jan. 19 - 23, 2026
  2. O(d)-symmetric multifield models and stochastic effects
    Korea-Japan Joint Workshop on Cosmology, Gravitation and Particle Physics [HP]
    Nagoya University, Nagoya, Japan
    Jul. 23 - 25, 2025
  3. Exactly solvable stochastic spectator
    New perspectives on cosmology [HP]
    Asia Pacific Center for Theoretical Physics (APCTP), Pohang, Korea
    Feb. 3 - 7, 2025
  4. Exactly solvable stochastic spectator
    Fourth Mini-workshop on the Early Universe [HP]
    Yatsugatake Commons, Yamanashi, Japan
    Sep. 3 - 6, 2024
  5. All exact solutions in stochastic inflation
    29th International Symposium on Particles, String and Cosmology (PASCOS 2024)
    International Centre for Interdisciplinary Science and Education (ICISE), Quy Nhon, Vietnam
    July 7 - 13, 2024
  6. Why does inflation look single field to us?
    Third Mini-workshop on the Early Universe [HP]
    Nobumoto Ohama Memorial Hall, Okinawa, Japan
    Feb. 7 - 9, 2024
  7. Stochastic selection effect in the early Universe
    The 32nd Workshop on General Relativity and Gravitation in Japan (JGRG32)
    Nagoya University, Nagoya, Japan
    Nov. 27 - Dec. 1, 2023
  8. Borel resummation for secular divergences in stochastic inflation
    RESCEU Summer School 2023
    Shinshu University, Nagano, Japan
    Aug. 9 - 12, 2023
  9. Borel resummation for secular divergences in stochastic inflation
    The 25th International Conference From the Planck Scale to the Electroweak Scale (Planck 2023)
    Warsaw University, Warsaw, Poland
    May 22 - 26, 2023
  10. Primordial black hole abundance from joint formation criteria
    The 15th Asia Pacific Physic Conference (APPC15)
    Online
    Aug. 21 - 26, 2022
  11. Two-point correlation in primordial black hole formation
    RESCEU Summer School 2022
    Online
    Aug. 18, 2022
  12. Systematic biases on primordial black hole mass function
    RESCEU Summer School 2021
    Online
    Aug. 18, 2021
  13. Primordial black holes, improved mass function, and its window function dependence
    The Online Workshop on General Relativity and Gravitation in Japan (Online JGRG)
    Online
    Nov. 23, 2020
  14. Primordial black holes and uncertainty of the mass function: window function dependence
    AAPPS-DACG Workshop on Astrophysics, Cosmology and Gravitation
    Online
    Nov. 11, 2020
  15. Primordial black hole mass spectrum and window function dependence
    RESCEU Summer School 2020
    Online
    Aug. 19, 2020

Contributed (domestic)

  1. 「クライン・アドラー変換を用いた可解 dS スカラー場模型の構成」
    日本物理学会第80回年次大会 18aEL102
    於広島大学
    2025 年 9 月 16 日 - 19日
  2. 「インフレーションの確率形式と厳密解」
    日本物理学会第79回年次大会 17pC214
    於北海道大学
    2024 年 9 月 16 日 - 19日
  3. 「確率形式における制約付き Langevin 方程式」
    日本物理学会第 78 回年次大会 18aT29
    於東北大学
    2023 年 9 月 16 日 - 19 日
  4. 「Stochastic Inflation における Borel 総和法の適用」
    日本物理学会 2023 年春季大会 24aW1
    オンライン
    2023 年 3 月 22日 - 25日
  5. 「二点相関による原始ブラックホール質量関数の補正」
    日本物理学会 2022 年秋季大会 6pA123
    於岡山理科大学
    2022 年 9 月 6 日 - 8 日
  6. 「揺らぎの二点相関を取り入れた原始ブラックホール存在量の評価」
    日本物理学会第 77 回年次大会 17pA421
    オンライン
    2022 年 3 月 15 日 - 19 日
  7. 「ピークカウント法における球対称密度揺らぎの扱いとその物理的帰結」
    日本物理学会第 76 回年次大会 14aW1
    オンライン
    2021 年 3 月 12 日 - 15 日
  8. 「原始ブラックホールの新しい質量関数と密度揺らぎの粗視化に伴うフィルター関数依存性」
    日本物理学会 2020 年秋季大会 15pSL
    オンライン
    2020 年 9 月 15 日

Poster (international/domestic)

  1. Coloured Noises and Primordial Black Holes
    Dark Matter and Black Holes [HP]
    Kavli IPMU, Chiba, Japan
    Dec. 1-5, 2025
  2. Stochastic Inflation: Review and Applications
    Joint Workshop on General Relativity and Cosmology (JGRC3)
    Nishiyastu-Onsen Miyamoto-no-Yu, Chichibu, Saitama, Japan
    Mar. 10-11, 2025
  3. 「インフレーション宇宙論に於ける確率的手法」
    第 37 回理論懇シンポジウム「宇宙論１００年：これまでとこれから」P48
    於国立天文台
    2024 年 12 月 24 日 - 26 日
  4. Curvaton Distribution and Parameter-Space Structure Based on Exact Solutions
    The 33rd Workshop on General Relativity and Gravitation in Japan (JGRG33)
    Kindai University, Osaka, Japan
    Dec. 2-6, 2024
  5. Exact Solutions in Stochastic Inflation
    COSMO'24
    Kyoto University, Kyoto, Japan
    Oct. 21 - 25, 2024
  6. 「原始ブラックホール質量スペクトルが持つ系統的バイアス」
    第 35 回理論懇シンポジウム「理論天文学・宇宙物理学の広がり：さらなる発展に向けて」P23
    於コラッセふくしま
    2022 年 12 月 21 日 - 23 日
  7. Primordial black hole abundance from joint formation criteria
    The Online Workshop on General Relativity and Gravitation in Japan (Online JGRG)
    Online
    Dec. 6 - 10, 2022
  8. Spacetime Thermodynamics: to the Entropic Gravity [review]
    第 49 回天文・天体物理若手夏の学校
    於ロワジールホテル豊橋
    2019 年 7 月 30 日 - 8 月 2 日

Seminar

  1. Construction of nonclassical exact solutions in quantum mechanics and stochastic inflation
    Theoretical Physics Colloquium [HP]
    Rikkyo University, Tokyo, Japan
    Dec. 23, 2025
  2. O(d)-symmetric multifield models and stochastic effects
    Majorana-Raychaudhuri Seminar Series [HP]
    Online
    Oct. 17, 2025
  3. Quantum Diffusion, Exact Solutions, and Multifield Models in Inflationary Cosmology （邦題：インフレーション宇宙論と量子揺らぎ・厳密解・複数場模型）
    Okayama University of Science, Okayama, Japan
    July 9, 2025
  4. Stochastic Inflation and Exact Solutions （邦題：インフレーションの確率形式と厳密解）
    群馬高専数理セミナー [HP]
    National Institute of Technology (NIT), Gunma Collage, Gunma, Japan.
  5. Exact Solutions in Stochastic Inflation, Joint Seminar on Cosmology and Related Topics [HP]
    Interdisciplinary Theoretical and Mathematical Sciences Program (RIKEN), Saitama, Japan.
    Oct. 10, 2024
  6. [Lang: JP] Stochastic Methods in Inflationary Cosmology, C-Lab. Seminar [HP], Nagoya University, Japan. (Jun. 12, 2023)
  7. [Lang: JP] Borel resummation for secular divergences in stochastic inflation, TUHEP Seminar [HP], Tohoku University, Miyagi, Japan. (Dec. 12, 2023)
  8. [Lang: EN] Constrained random processes in stochastic inflation, Theoretical Physics Colloquium [HP], Rikkyo University, Tokyo, Japan. (Nov. 7, 2023)

Invited

  1. Cosmic Inflation and Stochastic Inflation (90min lecture)
    Yonsei-Saga 22nd Partnership Program [HP]
    Saga University, Saga, Japan
    Oct. 27 - 31, 2025
  2. インフレーション宇宙の確率的進化
    第14回観測的宇宙論ワークショップ [HP]
    Okayama Convention Center, Okayama, Japan
    Oct. 6 - 8, 2025
  3. Stochastic Scalar Field Dynamics in dS from Quantum Deficient Oscillators
    Tensions in Cosmology (Corfu 2025)
    Mon-Repos, Corfu, Greece
    Sep. 2 - 8, 2025
  4. Construction of nonclassical exactly solvable scalar-field models in dS
    New Perspectives on Cosmology 2025 [HP]
    Ewha Womans University, Seoul, Korea
    Aug. 25 - 27, 2025
  5. Stochastic Inflation, Exact Solutions, and Multifields
    Cosmology Beyond the Analytic Lamppost (CoBALt)
    Institute Pascal, Orsay, France
    June 16 - July 4, 2025
  6. Stochastic Methods in Inflationary Cosmology
    Workshop on particle physics and cosmology: Saga 2025 (Saga 2025)
    Saga University, Saga, Japan
    Feb. 12 - 14, 2025
  7. Analytical Methods in Stochastic Inflation
    Evolution of the inhomogeneous universe: From Inflation to structure formation (KEKCosmoAY2024)
    KEK, Tsukuba, Japan
    Nov. 6 - 8, 2024
  8. Borel Resummation in Stochastic Inflation
    YITP International Molecule-type Workshop---Revisiting cosmological non-linealities in the era of precision surveys--- [HP]
    Yukawa Institute for Theoretical Physics, Kyoto, Japan
    July 13 - 28, 2023