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Ishiwata Koji  石渡 弘治

ORCIDConnect your ORCID iD *help
Researcher Number 40754271
Other IDs
Affiliation (Current) 2025: 金沢大学, 数物科学系, 准教授
Affiliation (based on the past Project Information) *help 2018 – 2025: 金沢大学, 数物科学系, 准教授
2017 – 2018: 金沢大学, 数物科学系, 助教
Review Section/Research Field
Principal Investigator
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics / Science and Engineering / Particle/Nuclear/Cosmic ray/Astro physics
Except Principal Investigator
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics / Science and Engineering / Particle/Nuclear/Cosmic ray/Astro physics
Keywords
Principal Investigator
宇宙論 / 素粒子論 / 素粒子論的宇宙論 / インフレーション / 宇宙線 / 暗黒物質探索実験 / ヒッグス粒子 / 暗黒物質
Except Principal Investigator
暗黒物質 / 素粒子論 … More / WISP / アクシオン / 極弱粒子 / 初期宇宙 / ブラックホール / インフレーション / バリオン非対称性 / 物質反物質非対称性 / 統一模型 / 宇宙論 / 弦理論 / ニュートリノ / 素粒子標準模型を超える物理 / 超弦理論 / 初期宇宙論 / 素粒子理論 / 宇宙物理 / ステライルニュートリノ / 隠れた光子 / ダークマター Less
  • Research Projects

    (6 results)
  • Research Products

    (57 results)
  • Co-Researchers

    (10 People)
  •  アクシオン-ゲージ場相互作用が作る重力波とダークマター・バリオン数生成Principal Investigator

    • Principal Investigator
      石渡 弘治
    • Project Period (FY)
      2025 – 2028
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      Kanazawa University
  •  極弱相互作用を持つ軽い新粒子の描く新宇宙描像とその実験的検証

    • Principal Investigator
      高橋 史宜
    • Project Period (FY)
      2020 – 2024
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      Tohoku University
  •  Exploration of Symmetry and Cosmology with Neutrinos

    • Principal Investigator
      Ibe Masahiro
    • Project Period (FY)
      2018 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
    • Review Section
      Science and Engineering
    • Research Institution
      The University of Tokyo
  •  New physics from dark matter and HiggsPrincipal Investigator

    • Principal Investigator
      Ishiwata Koji
    • Project Period (FY)
      2017 – 2020
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Kanazawa University
  •  超対称素粒子模型の真空構造解明とインフレーション宇宙の新展開Principal Investigator

    • Principal Investigator
      石渡 弘治
    • Project Period (FY)
      2017 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
    • Review Section
      Science and Engineering
    • Research Institution
      Kanazawa University
  •  Cosmological Evolution and Search for Light New Particles with Ultraweak Interactions

    • Principal Investigator
      Takahashi Fuminobu
    • Project Period (FY)
      2017 – 2020
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Tohoku University

All 2024 2023 2022 2021 2020 2019 2018 2017

All Journal Article Presentation

  • [Journal Article] Supersymmetric baryogenesis in a hybrid inflation model2023

    • Author(s)
      Gunji Yoshihiro、Ishiwata Koji、Yoshida Takahiro
    • Journal Title

      Journal of High Energy Physics

      Volume: 2023 Issue: 8

    • DOI

      10.1007/jhep08(2023)201

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Journal Article] Topology-insensitive axion mass in magnetic topological insulators2022

    • Author(s)
      Ishiwata Koji
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 19 Pages: 195157-1

    • DOI

      10.1103/physrevb.106.195157

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PLANNED-18H05542, KAKENHI-PROJECT-23K20231
  • [Journal Article] Constraining the primordial curvature perturbation using dark matter substructure2022

    • Author(s)
      Ando Shin’ichiro、Hiroshima Nagisa、Ishiwata Koji
    • Journal Title

      Physical Review D

      Volume: 106 Issue: 10 Pages: 103014-103025

    • DOI

      10.1103/physrevd.106.103014

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22K14035, KAKENHI-PROJECT-23K20231, KAKENHI-PLANNED-20H05852, KAKENHI-PLANNED-20H05861
  • [Journal Article] Axion-gauge field dynamics with backreaction2022

    • Author(s)
      Ishiwata Koji、Komatsu Eiichiro、Obata Ippei
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2022 Issue: 03 Pages: 010-010

    • DOI

      10.1088/1475-7516/2022/03/010

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-20H05859, KAKENHI-PROJECT-23K20231
  • [Journal Article] Subcritical regime of hybrid inflation with modular A4 symmetry2022

    • Author(s)
      Gunji Yoshihiro、Ishiwata Koji、Yoshida Takahiro
    • Journal Title

      Journal of High Energy Physics

      Volume: 2022 Issue: 11

    • DOI

      10.1007/jhep11(2022)002

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PLANNED-18H05542, KAKENHI-PROJECT-23K20231
  • [Journal Article] Sommerfeld-enhanced dark matter searches with dwarf spheroidal galaxies2021

    • Author(s)
      Ando Shin’ichiro、Ishiwata Koji
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 2 Pages: 023016-023016

    • DOI

      10.1103/physrevd.104.023016

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H04836, KAKENHI-PLANNED-20H05861, KAKENHI-PROJECT-23K20231
  • [Journal Article] Axion mass in antiferromagnetic insulators2021

    • Author(s)
      Koji Ishiwata
    • Journal Title

      Phys. Rev. D

      Volume: 104 Issue: 1 Pages: 016004-016004

    • DOI

      10.1103/physrevd.104.016004

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Journal Article] Subcritical hybrid inflation in a generalized superconformal model2021

    • Author(s)
      Yoshihiro Gunji and Koji Ishiwata
    • Journal Title

      Phys. Rev. D

      Volume: 104 Issue: 12 Pages: 123545-123545

    • DOI

      10.1103/physrevd.104.123545

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Journal Article] Probing heavy dark matter decays with multi-messenger astrophysical data2020

    • Author(s)
      Koji Ishiwata, Oscar Macias, Shin'ichiro Ando, Makoto Arimoto
    • Journal Title

      JCAP

      Volume: 01 Issue: 01 Pages: 003-003

    • DOI

      10.1088/1475-7516/2020/01/003

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278, KAKENHI-PROJECT-17H02875, KAKENHI-PROJECT-17H04836, KAKENHI-ORGANIZER-17H06357, KAKENHI-PUBLICLY-18H04340, KAKENHI-PLANNED-18H05542, KAKENHI-PLANNED-17H06362
  • [Journal Article] Leptogenesis after superconformal subcritical hybrid inflation2019

    • Author(s)
      Yoshihiro Gunji, Koji Ishiwata
    • Journal Title

      JHEP

      Volume: 09 Issue: 9 Pages: 065-065

    • DOI

      10.1007/jhep09(2019)065

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14278, KAKENHI-PROJECT-17H02875, KAKENHI-PLANNED-18H05542
  • [Journal Article] Superconformal subcritical hybrid inflation2018

    • Author(s)
      Ishiwata Koji
    • Journal Title

      Physics Letters B

      Volume: 782 Pages: 367-371

    • DOI

      10.1016/j.physletb.2018.05.047

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14278, KAKENHI-PUBLICLY-17H05402, KAKENHI-PROJECT-17H02875
  • [Journal Article] Probing pseudo Nambu-Goldstone boson dark matter at loop level2018

    • Author(s)
      Ishiwata Koji、Toma Takashi
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Issue: 12 Pages: 1-1

    • DOI

      10.1007/jhep12(2018)089

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278, KAKENHI-PUBLICLY-17H05402, KAKENHI-PROJECT-17H02875, KAKENHI-PLANNED-18H05542
  • [Journal Article] Longitudinal W boson scattering in a light scalar top scenario2017

    • Author(s)
      K. Ishiwata,Y. Yonekura
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 1 Pages: 015009-015009

    • DOI

      10.1103/physrevd.96.015009

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14278, KAKENHI-PUBLICLY-17H05402
  • [Presentation] Dark Matter-driven Studies: Topological Insulators and Inflation2024

    • Author(s)
      石渡 弘治
    • Organizer
      Extreme Mass Dark Matter Workshop from Superlight to Superheavy
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] New approaches to/from dark matter2023

    • Author(s)
      石渡 弘治
    • Organizer
      素粒子現象論研究会2022
    • Invited
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] Axion in antiferromagnetic insulators2022

    • Author(s)
      石渡弘治
    • Organizer
      ニュートリノで拓く素粒子と宇宙
    • Invited
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Indirect searches on heavy dark matter decays and inflation2022

    • Author(s)
      石渡弘治
    • Organizer
      Direct and Indirect Detection of Dark Matter, The 2nd DMNet International Symposium
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Axion mass in magnetic topological insulators2022

    • Author(s)
      石渡 弘治
    • Organizer
      Summer NRF-JSPS Workshop
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] Axion mass in magnetic topological insulators2022

    • Author(s)
      石渡弘治
    • Organizer
      Summer NRF-JSPS Workshop
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Indirect searches on heavy dark matter decays and inflation2022

    • Author(s)
      石渡 弘治
    • Organizer
      Direct and Indirect Detection of Dark Matter, The 2nd DMNet International Symposium
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] Generalized superconformal subcritical hybrid inflation with modular symmetry2021

    • Author(s)
      石渡 弘治
    • Organizer
      Recent development of flavor symmetry
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] Wino dark matter searches with dwarf spheroidal galaxies2021

    • Author(s)
      石渡 弘治
    • Organizer
      SUSY2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] Axion in antiferromagnetic insulators2021

    • Author(s)
      石渡 弘治
    • Organizer
      Workshop on Very Light Dark Matter 2021
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] 反強磁性絶縁体アクシオン2021

    • Author(s)
      石渡 弘治
    • Organizer
      素粒子現象論研究会 2021
    • Data Source
      KAKENHI-PROJECT-23K20231
  • [Presentation] Probing heavy dark matter decays with multi-messenger astrophysical data2020

    • Author(s)
      石渡弘治
    • Organizer
      素粒子現象論研究会2020
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Phenomenology of superconformal subcritical hybrid inflation2020

    • Author(s)
      Koji Ishiwata
    • Organizer
      Miyazaki Workshop on Particle Physics and Cosmology
    • Invited
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Phenomenology of superconformal subcritical hybrid inflation2020

    • Author(s)
      K.Ishiwata
    • Organizer
      Miyazaki Workshop on Particle Physics and Cosmology 2020
    • Invited
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Brief review of direct detection of dark matter2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      CRCタウンミーティング
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Probing heavy dark matter decays with multi-messenger astrophysical data2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      Scalar 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Brief review of dark matter and the detection2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      Toyama International Symposium on Physics at the Cosmic Frontier
    • Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Theoretical improvements in particle dark matter searches2019

    • Author(s)
      石渡弘治
    • Organizer
      Toyama International Symposium on "Physics at the Cosmic Frontier”
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Leptogenesis after superconformal subcritical hybrid inflation2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      Planck 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Brief review of direct detection of dark matter2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      2019年度第1回CRC将来計画タウンミーティング
    • Invited
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Theoretical improvements in particle dark matter searches2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      Toyama International Symposium on "Particle at the Cosmic Frontier"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Leptogenesis in superconformal subcritical hybrid inflation2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      Planck 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Probing heavy dark matter decays with multi-messenger astrophysical data2019

    • Author(s)
      K. Ishiwata
    • Organizer
      Scalar 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Theoretical improvements in particle dark matter searches2019

    • Author(s)
      Koji Ishiwata
    • Organizer
      Toyama International Symposium on "Physics at the Cosmic Frontier"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-17H05402
  • [Presentation] Leptogenesis in superconformal subcritical hybrid inflation2019

    • Author(s)
      K. Ishiwata
    • Organizer
      Planck 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Brief review of direct detection of dark matter2019

    • Author(s)
      K. Ishiwata
    • Organizer
      2019年度第1回CRC将来計画タウンミーティング
    • Invited
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Superconformal Subcritical Hybrid Inflation2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      SUSY2018
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-17H05402
  • [Presentation] インフレーションによるプランクスケール物理探索の可能性.2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      質量階層性に対する新しい原理が導く多彩な物理現象とプランクスケールの物理
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Superconformal Subcritical Hybrid Inflation2018

    • Author(s)
      石渡弘治
    • Organizer
      SUSY18
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Superconformal Subcritical Hybrid Inflation2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      SUSY2018
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] インフレーションによるプランクスケール物理探索の可能性2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      質量階層性に対する新しい原理が導く多彩な物理現象とプランクスケールの物理
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Superconformal Subcritical Hybrid Inflation.2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      SUSY2018
    • Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] インフレーションによる プランクスケール物理探索の可能性2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      質量階層性に対する新しい原理が導く多彩な物理現象とプランクスケールの物理
    • Data Source
      KAKENHI-PUBLICLY-17H05402
  • [Presentation] 銀河外ガンマ線による宇宙暗黒物質探索2018

    • Author(s)
      石渡弘治
    • Organizer
      素粒子物理学の進展2018
    • Invited
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] 銀河外ガンマ線による宇宙暗黒物質探索.2018

    • Author(s)
      Koji Ishiwata
    • Organizer
      素粒子物理学の進展2018
    • Data Source
      KAKENHI-PLANNED-18H05542
  • [Presentation] Theoretical improvements in particle dark matter searches2017

    • Author(s)
      Koji Ishiwata
    • Organizer
      The 3rd Winter Toyama Mini-Workshop on Particle Physics and Cosmology "Basis of the Universe with Revolutionary Ideas 2018"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-17H05402
  • [Presentation] Constraining decaying dark matter using gamma rays and local galaxy distribution2017

    • Author(s)
      K. Ishiwata
    • Organizer
      宇宙観測と地上実験から探るダークマター研究の現状と展望
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Constraining particle dark matter using local galaxy distribution2017

    • Author(s)
      Koji Ishiwata
    • Organizer
      DESY Theory Workshop Fundamental physics in the cosmos: The early, the large and the dark Universe
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Constraining particle dark matter using local galaxy distribution2017

    • Author(s)
      K. Ishiwata
    • Organizer
      DESY Theory Workshop Fundamental physics in the cosmos: The early, the large and the dark Universe
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278
  • [Presentation] Constraining decaying dark matter using gamma rays and local galaxy distribution2017

    • Author(s)
      Koji Ishiwata
    • Organizer
      宇宙観測と地上実験から探るダークマター研究の現状と展望
    • Data Source
      KAKENHI-PUBLICLY-17H05402
  • [Presentation] Constraining particle dark matter using local galaxy distribution2017

    • Author(s)
      Koji Ishiwata
    • Organizer
      宇宙観測と地上実験から探るダークマター研究の現状と展望
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Constraining particle dark matter using local galaxy distribution2017

    • Author(s)
      Koji Ishiwata
    • Organizer
      DESY Theory Workshop Fundamental physics in the cosmos: The early, the large and the dark Universe
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-17H05402
  • [Presentation] Theoretical improvements in particle dark matter searches2017

    • Author(s)
      Koji Ishiwata
    • Organizer
      The 3rd Winter Toyama Mini-Workshop on Particle Physics and Cosmology “Basis of the Universe with Revolutionary Ideas 2018"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H02875
  • [Presentation] Theoretical improvements in particle dark matter searches2017

    • Author(s)
      K. Ishiwata
    • Organizer
      The 3rd Winter Toyama Mini-Workshop on Particle Physics and Cosmology "Basis of the Universe with Revolutionary Ideas 2018"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14278
  • 1.  Takahashi Fuminobu (60503878)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 2.  Ibe Masahiro (50599008)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  横崎 統三 (80779322)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  渡利 泰山 (40451819)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  北野 龍一郎 (50543451)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  永田 夏海 (60794328)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  北嶋 直弥 (50737955)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 8.  安藤 真一郎
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 9.  廣島 渚
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 10.  小松 英一郎
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

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