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Otsuka Hajime  大塚 啓

… Alternative Names

大塚 啓  オオツカ ハジメ

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Researcher Number 80777988
Other IDs
  • ORCIDhttps://orcid.org/0000-0002-0791-6180
Affiliation (Current) 2023: 九州大学, 理学研究院, 助教
Affiliation (based on the past Project Information) *help 2023: 九州大学, 理学(系)研究科(研究院), 助教
2021: 九州大学, 理学研究院, 助教
2020: 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 学振特別研究員
2017 – 2018: 早稲田大学, 理工学術院, 助教
Review Section/Research Field
Principal Investigator
Particle/Nuclear/Cosmic ray/Astro physics / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics / Transformative Research Areas, Section (II)
Keywords
Principal Investigator
CP対称性の破れ / 超弦理論 / アクシオン / モジュライ / ブローアップ / モジュラー対称性 / 素粒子現象論 / スワンプランド / 素粒子的宇宙論
  • Research Projects

    (3 results)
  • Research Products

    (47 results)
  • Co-Researchers

    (1 People)
  •  機械学習を用いた弦の有効理論の構築Principal Investigator

    • Principal Investigator
      大塚 啓
    • Project Period (FY)
      2023 – 2024
    • Research Category
      Grant-in-Aid for Transformative Research Areas (A)
    • Review Section
      Transformative Research Areas, Section (II)
    • Research Institution
      Kyushu University
  •  オービフォールド特異点の解消とその現象論的応用Principal Investigator

    • Principal Investigator
      大塚 啓
    • Project Period (FY)
      2020 – 2023
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      Kyushu University
      High Energy Accelerator Research Organization
  •  Phenomenological studies of axion and CP violationPrincipal Investigator

    • Principal Investigator
      Otsuka Hajime
    • Project Period (FY)
      2017 – 2018
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Waseda University

All 2022 2021 2020 2019 2018 2017

All Journal Article Presentation Book

  • [Book] 数理科学 2021年 1月号2021

    • Author(s)
      大塚啓
    • Total Pages
      7
    • Publisher
      サイエンス社
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Journal Article] Modular symmetry in the SMEFT2022

    • Author(s)
      Kobayashi Tatsuo、Otsuka Hajime、Tanimoto Morimitsu、Yamamoto Kei
    • Journal Title

      Phys.Rev.D

      Volume: 105 Pages: 055022-055022

    • DOI

      10.1103/physrevd.105.055022

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20K14477, KAKENHI-PROJECT-21K13923
  • [Journal Article] Symplectic modular symmetry in heterotic string vacua: flavor, CP, and R-symmetries2022

    • Author(s)
      Ishiguro Keiya、Kobayashi Tatsuo、Otsuka Hajime
    • Journal Title

      Journal of High Energy Physics

      Volume: 2022 Pages: 001-020

    • DOI

      10.1007/jhep01(2022)020

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20K14477
  • [Journal Article] On stringy origin of minimal flavor violation2022

    • Author(s)
      Kobayashi Tatsuo、Otsuka Hajime
    • Journal Title

      The European Physical Journal C

      Volume: 82 Pages: 001-006

    • DOI

      10.1140/epjc/s10052-022-09986-4

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20K14477
  • [Journal Article] Sharpening the boundaries between flux landscape and swampland by tadpole charge2021

    • Author(s)
      Ishiguro Keiya、Otsuka Hajime
    • Journal Title

      Journal of High Energy Physics

      Volume: 2021 Pages: 001-017

    • DOI

      10.1007/jhep12(2021)017

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20K14477
  • [Journal Article] Hierarchical structure of physical Yukawa couplings from matter field Kaehler metric2021

    • Author(s)
      Ishiguro Keiya、Kobayashi Tatsuo、Otsuka Hajime
    • Journal Title

      Journal of High Energy Physics

      Volume: 2021 Pages: 001-025

    • DOI

      10.1007/jhep07(2021)064

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20K14477
  • [Journal Article] Landscape of modular symmetric flavor models2021

    • Author(s)
      Ishiguro Keiya、Kobayashi Tatsuo、Otsuka Hajime
    • Journal Title

      Journal of High Energy Physics

      Volume: 2021 Pages: 001-036

    • DOI

      10.1007/jhep03(2021)161

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20K14477, KAKENHI-PUBLICLY-19H04605, KAKENHI-PROJECT-19J00664
  • [Journal Article] Small flux superpotential in F-theory compactifications2021

    • Author(s)
      Honma Yoshinori、Otsuka Hajime
    • Journal Title

      Physical Review D

      Volume: 103 Pages: 126022-126022

    • DOI

      10.1103/physrevd.103.126022

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20K14477
  • [Journal Article] Modular symmetry by orbifolding magnetized T2?×?T2: realization of double cover of ΓN2020

    • Author(s)
      Kikuchi Shota、Kobayashi Tatsuo、Otsuka Hajime、Takada Shintaro、Uchida Hikaru
    • Journal Title

      Journal of High Energy Physics

      Volume: 2020 Pages: 001-027

    • DOI

      10.1007/jhep11(2020)101

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20K14477, KAKENHI-PUBLICLY-19H04605, KAKENHI-PROJECT-19J00664, KAKENHI-PROJECT-20J20388
  • [Journal Article] Challenge for spontaneous CP violation in Type IIB orientifolds with fluxes2020

    • Author(s)
      Kobayashi Tatsuo、Otsuka Hajime
    • Journal Title

      Physical Review D

      Volume: 102 Pages: 026004-026004

    • DOI

      10.1103/physrevd.102.026004

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20K14477, KAKENHI-PUBLICLY-19H04605, KAKENHI-PROJECT-19J00664
  • [Journal Article] Affleck-Dine baryogenesis in the SUSY Dine-Fischler-Srednicki-Zhitnitsky axion model without R parity2019

    • Author(s)
      Akita Kensuke、Otsuka Hajime
    • Journal Title

      Physical Review D

      Volume: 99 Pages: 055035-055035

    • DOI

      10.1103/physrevd.99.055035

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Journal Article] SO(32) heterotic standard model vacua in general Calabi-Yau compactifications2018

    • Author(s)
      Otsuka Hajime、Takemoto Kenta
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Pages: 0-23

    • DOI

      10.1007/jhep11(2018)034

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Journal Article] Radiative Kaehler moduli stabilization2018

    • Author(s)
      Kobayashi Tatsuo、Omoto Naoya、Otsuka Hajime、Tatsuishi Takuya H.
    • Journal Title

      Physical Review D

      Volume: 「印刷中」

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Journal Article] SO(32) heterotic line bundle models2018

    • Author(s)
      Otsuka Hajime
    • Journal Title

      Journal of High Energy Physics

      Volume: 「印刷中」

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Journal Article] Supersymmetry preserving and breaking degenerate vacuum, and radiative moduli stabilization2017

    • Author(s)
      Kobayashi Tatsuo、Omoto Naoya、Otsuka Hajime、Tatsuishi Takuya H.
    • Journal Title

      Phys. Rev.

      Volume: 96

    • DOI

      10.1103/physrevd.96.046004

    • NAID

      120006346116

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14303, KAKENHI-PUBLICLY-17H05395, KAKENHI-PROJECT-26247042
  • [Journal Article] On the flux vacua in F-theory compactifications2017

    • Author(s)
      Honma Yoshinori、Otsuka Hajime
    • Journal Title

      Physics Letters B

      Volume: 774 Pages: 225-228

    • DOI

      10.1016/j.physletb.2017.09.062

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Stringy Origin of Minimal Flavor Violation2021

    • Author(s)
      大塚啓
    • Organizer
      日本物理学会2021年秋季大会
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Stringy Origin of Minimal Flavor Violation2021

    • Author(s)
      大塚啓
    • Organizer
      素粒子物理学の進展2021
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Symplectic modular symmetry in heterotic string vacua: flavor, CP, and R-symmetries2021

    • Author(s)
      Hajime Otsuka
    • Organizer
      Asia-Pacific Workshop on Particle Physics and Cosmology 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Small flux superpotential in F-theory compactifications2021

    • Author(s)
      Hajime Otsuka
    • Organizer
      KEK Theory Workshop 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Stringy Origin of Minimal Flavor Violation2021

    • Author(s)
      Hajime Otsuka
    • Organizer
      Recent development of flavor symmetry
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Stringy Origin of Minimal Flavor Violation2021

    • Author(s)
      大塚啓
    • Organizer
      Flavor Physics Workshop 2021
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Stringy origin of modular flavor symmetry and spontaneous CP violation2021

    • Author(s)
      Hajime Otsuka
    • Organizer
      SUSY 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Hidden structures in the landscape of heterotic line bundle models2021

    • Author(s)
      Hajime Otsuka
    • Organizer
      Strings and Fields 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Small flux superpotential in F-theory compactifications2021

    • Author(s)
      Hajime Otsuka
    • Organizer
      Dark World to Swampland 2021, The 6th IBS-IFT-MultiDark Workshop
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications2021

    • Author(s)
      大塚啓
    • Organizer
      日本物理学会第76回年次大会
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Hidden structures in the landscape of heterotic line bundle models2020

    • Author(s)
      Hajime Otsuka
    • Organizer
      KEK Theory Workshop 2020
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Deep learning and k-means clustering in heterotic string vacua with line bundles2020

    • Author(s)
      大塚啓
    • Organizer
      日本物理学会2020年秋季大会
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications2020

    • Author(s)
      Hajime Otsuka
    • Organizer
      Strings and Fields 2020
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K14477
  • [Presentation] Heterotic Stringy Corrections to Metrics of Toroidal Orbifolds and Their Resolutions2019

    • Author(s)
      大塚啓、Leung Pompey
    • Organizer
      日本物理学会第74回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Affleck-Dine baryogenesis in the SUSY DFSZ axion model without R-parity2019

    • Author(s)
      秋田謙介、大塚啓
    • Organizer
      日本物理学会第74回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Hypercharge Flux in SO(32) Heterotic String2018

    • Author(s)
      竹本賢太、大塚啓
    • Organizer
      日本物理学会2018年秋季大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] On the Flux Vacua in F-theory Compactifications2018

    • Author(s)
      本間良則, 大塚啓
    • Organizer
      日本物理学会第73回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Axion decay constants at special points in type II string theory2018

    • Author(s)
      Otsuka Hajime, Honda Masaki, Oikawa Akane
    • Organizer
      Mini-workshop on inflation, mirror symmetry and F-theory
    • Invited
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] On the vacuum structure of F-theory compactifications2018

    • Author(s)
      Otsuka Hajime
    • Organizer
      KEK Theory Workshop 2018
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Radiative Kaehler moduli stabilization2018

    • Author(s)
      大塚啓, 小林達夫, 大本直哉, 立石卓也
    • Organizer
      日本物理学会第73回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Hypercharge flux in SO(32) heterotic string theory2018

    • Author(s)
      Otsuka Hajime
    • Organizer
      Strings and fields 2018
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Hypercharge flux in SO(32) heterotic string theory2018

    • Author(s)
      Otsuka Hajime
    • Organizer
      素粒子物理学の進展2018
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] The impact of QCD axion on Affleck-Dine baryogenesis2018

    • Author(s)
      秋田謙介, 大塚啓
    • Organizer
      日本物理学会第73回年次大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Radiative Kaehler moduli stabilization2017

    • Author(s)
      Otsuka Hajime, Kobayashi Tatsuo, Omoto Naoya, Tatsuishi Takuya H.
    • Organizer
      Focus Meeting: new perspectives on light particles
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] On the Flux Vacua in F-theory Compactifications2017

    • Author(s)
      Otsuka Hajime, Honma Yoshinori
    • Organizer
      Exceptional Groups as Symmetries of Nature
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] On the vacuum structure of F-theory compactifications2017

    • Author(s)
      Otsuka Hajime, Honma Yoshinori
    • Organizer
      PASCOS 2017
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Three-generation models in SO(32) heterotic string theory2017

    • Author(s)
      Otsuka Hajime
    • Organizer
      Summer Institute 2017
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] On the Vacuum Structure of F-theory Compactifications2017

    • Author(s)
      Otsuka Hajime, Honma Yoshinori
    • Organizer
      String Phenomenology 2017
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] SO(32) heterotic line bundle models2017

    • Author(s)
      Otsuka Hajime
    • Organizer
      Strings and Fields 2017
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] SO(32) heterotic line bundle models2017

    • Author(s)
      Otsuka Hajime
    • Organizer
      日本物理学会 2017年秋季大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • [Presentation] Supersymmetry preserving and breaking degenerate vacua, and radiative moduli stabilization2017

    • Author(s)
      大本直哉, 小林達夫, 大塚啓, 立石卓也
    • Organizer
      日本物理学会 2017年秋季大会
    • Data Source
      KAKENHI-PROJECT-17K14303
  • 1.  小林 達夫
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 4 results

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