MURAI KAI 村井開

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村井開ムライカイ

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Researcher Number	50993078
Other IDs
Affiliation (Current)	2026: 国立研究開発法人理化学研究所, 数理創造研究センター, 基礎科学特別研究員
Affiliation (based on the past Project Information) *help	2024: 東北大学, 理学研究科, 特任研究員(日本学術振興会特別研究員PD)
Review Section/Research Field	Principal Investigator Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Keywords	Principal Investigator ゲージ場 / インフレーション / 原始重力波 / 重力波 / アクシオン

アクシオンとゲージ場のダイナミクスから放出される重力波の研究Principal Investigator
- Principal Investigator
  
  村井開
- Project Period (FY)
  2024 – 2027
- 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
  Tohoku University

All 2025 2024

All Journal Article Presentation

[Journal Article] Supermassive black hole formation from Affleck-Dine mechanism with suppressed clustering on large scales2025
- Author(s)
  Kasai Kentaro、Kawasaki Masahiro、Murai Kai、Neda Shunsuke
- Journal Title
  
  Physical Review D
  
  Volume: 111 Issue: 8 Pages: 083513-083513
- DOI
  10.1103/physrevd.111.083513
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-20H05851, KAKENHI-PROJECT-21K03567, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] Isotropic cosmic birefringence from an oscillating axionlike field2025
- Author(s)
  Murai Kai
- Journal Title
  
  Physical Review D
  
  Volume: 111 Issue: 4
- DOI
  10.1103/physrevd.111.043514
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] More is different: multi-axion dynamics changes topological defect evolution2025
- Author(s)
  Lee Junseok、Murai Kai、Takahashi Fuminobu、Yin Wen
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2025 Issue: 04 Pages: 002-002
- DOI
  10.1088/1475-7516/2025/04/002
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-20H05851, KAKENHI-PROJECT-23K20231, KAKENHI-PROJECT-23K22486, KAKENHI-PROJECT-22K14029, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] Primordial origin of supermassive black holes from axion bubbles2024
- Author(s)
  Kasai Kentaro、Kawasaki Masahiro、Kitajima Naoya、Murai Kai、Neda Shunsuke、Takahashi Fuminobu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2024 Issue: 05 Pages: 092-092
- DOI
  10.1088/1475-7516/2024/05/092
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-20H05851, KAKENHI-PROJECT-23K20231, KAKENHI-PROJECT-23K20841, KAKENHI-PROJECT-21K03567, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] Misalignment production of vector boson dark matter from axion-SU(2) inflation2024
- Author(s)
  Fujita Tomohiro、Murai Kai、Nakayama Kazunori、Yin Wen
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2024 Issue: 04 Pages: 007-007
- DOI
  10.1088/1475-7516/2024/04/007
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-23K03424, KAKENHI-PROJECT-21K20364, KAKENHI-PLANNED-20H05851, KAKENHI-PROJECT-23K22486, KAKENHI-PROJECT-24K07010, KAKENHI-PROJECT-22K14029, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] Induced domain walls of QCD axion, and gravitational waves2024
- Author(s)
  Lee Junseok、Murai Kai、Takahashi Fuminobu、Yin Wen
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2024 Issue: 10 Pages: 038-038
- DOI
  10.1088/1475-7516/2024/10/038
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-20H05851, KAKENHI-PROJECT-23K20231, KAKENHI-PROJECT-23K22486, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] Affleck-Dine leptogenesis scenario for resonant production of sterile neutrino dark matter2024
- Author(s)
  Kasai Kentaro、Kawasaki Masahiro、Murai Kai
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2024 Issue: 08 Pages: 008-008
- DOI
  10.1088/1475-7516/2024/08/008
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-20H05851, KAKENHI-PROJECT-21K03567, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Journal Article] Revisiting the minimal Nelson-Barr model2024
- Author(s)
  Murai Kai、Nakayama Kazunori
- Journal Title
  
  Journal of High Energy Physics
  
  Volume: 11 Issue: 11 Pages: 098-098
- DOI
  10.1007/jhep11(2024)098
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24K07010, KAKENHI-PROJECT-24K17039, KAKENHI-PROJECT-23KJ0088
[Presentation] Misalignment production of vector boson dark matter from axion-SU(2) inflation2024
- Author(s)
  Kai Murai
- Organizer
  SUSY24
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K17039
[Presentation] 再結合期のアクシオン振動によるCMB偏光の宇宙複屈折と減衰2024
- Author(s)
  村井開
- Organizer
  日本物理学会2024年年次大会
- Data Source
  KAKENHI-PROJECT-24K17039
[Presentation] Induced Domain Walls of QCD Axion, and Gravitational Waves2024
- Author(s)
  Kai Murai
- Organizer
  DESY theory workshop Whisper from the dark universe
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K17039
[Presentation] Isotropic cosmic birefringence from an oscillating axion-like field2024
- Author(s)
  Kai Murai
- Organizer
  Workshop on Cosmic Indicators of Dark Matter 2024
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K17039
[Presentation] Induced Domain Walls of QCD Axion, and Gravitational Waves2024
- Author(s)
  Kai Murai
- Organizer
  基研研究会素粒子物理学の進展2024
- Data Source
  KAKENHI-PROJECT-24K17039

1. TAKAHASHI Fuminobu

# of Collaborated Projects: 0 results

# of Collaborated Products: 3 results
2. NAKAYAMA Kazunori

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
3. 北嶋直弥

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
4. 川崎雅裕

# of Collaborated Projects: 0 results

# of Collaborated Products: 3 results
5. 藤田智弘

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
6. 殷文

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results

MURAI KAI 村井 開

村井 開 ムライ カイ

Research Projects

Research Products

Co-Researchers

アクシオンとゲージ場のダイナミクスから放出される重力波の研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Supermassive black hole formation from Affleck-Dine mechanism with suppressed clustering on large scales2025

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Isotropic cosmic birefringence from an oscillating axionlike field2025

Author(s)

Journal Title

DOI

Data Source

[Journal Article] More is different: multi-axion dynamics changes topological defect evolution2025

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Primordial origin of supermassive black holes from axion bubbles2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Misalignment production of vector boson dark matter from axion-SU(2) inflation2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Induced domain walls of QCD axion, and gravitational waves2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Affleck-Dine leptogenesis scenario for resonant production of sterile neutrino dark matter2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Revisiting the minimal Nelson-Barr model2024

Author(s)

Journal Title

DOI

Data Source

[Presentation] Misalignment production of vector boson dark matter from axion-SU(2) inflation2024

Author(s)

Organizer

Data Source

[Presentation] 再結合期のアクシオン振動によるCMB偏光の宇宙複屈折と減衰2024

Author(s)

Organizer

Data Source

[Presentation] Induced Domain Walls of QCD Axion, and Gravitational Waves2024

Author(s)

Organizer

Data Source

[Presentation] Isotropic cosmic birefringence from an oscillating axion-like field2024

Author(s)

Organizer

Data Source

[Presentation] Induced Domain Walls of QCD Axion, and Gravitational Waves2024

Author(s)

Organizer

Data Source

MURAI KAI 村井開

村井開ムライカイ