Research field (1)：
Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research keywords (3)：
supergravity
, 電弱対称性の破れ
, 余剰次元
Research theme for competitive and other funds (3)：
2013 - 2018 Researches on extra-dimensional models based on higher-dimensional supergravities
2010 - 2012 Research on symmetry breaking in extra-dimensional models
2000 - 2001 超対称標準模型における自発的CP対称性の破れの可能性
Papers (60)：
Hajime Otsuka, Yutaka Sakamura. Induced moduli oscillation by radiation and space expansion in a higher-dimensional model. Physical Review D. 2024. 109. 11
Hajime Otsuka, Yutaka Sakamura. Full higher-dimensional analysis of moduli oscillation and radiation in expanding universe. Journal of High Energy Physics. 2023. 2023. 5
Hajime Otsuka, Yutaka Sakamura. Full higher-dimensional analysis of moduli oscillation and radiation in expanding universe. JOURNAL OF HIGH ENERGY PHYSICS. 2023. 5
Hajime Otsuka, Yutaka Sakamura. Spacetime evolution during moduli stabilization in radiation dominated era beyond 4D effective theory. Journal of High Energy Physics. 2022
Hiroyuki Abe, Shuntaro Aoki, Yu Asai, Yutaka Sakamura. Fate of domain walls in 5D gravitational theory with compact extra dimension. Journal of High Energy Physics. 2020. 2020. 12
2015/11 - 現在 High Energy Accelerator Research Organization Institute of Particle and Nuclear Studies Institute Lecturer
2009/12 - 2015/10 KEK Institute of Particle and Nuclear Studies Assistant professor
2008/04 - 2009/12 RIKEN Nishina Center for Accelerator-Based Science Special researcher, basic science program
2005/04 - 2008/03 Osaka university Graduate school of science JSPS research fellow
2003/09 - 2005/03 KAIST Department of physics Postdoctoral fellow
Tohoku university Graduate school of science Postdoctoral fellow
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Awards (2)：
2009/03 - Particle Research Scholarship Foundation Seitaro Nakamura Award SUSY flavor structure of 5D supergravity with multi moduli
2008/03 - Japan Particle and Nuclear Theory Forum Particle physics medal: young scientist award in theoretical particle physics Roles of Z2-odd N=1 multiplets in off-shell dimensional reduction of 5D supergravity
