Research field (1):
Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research keywords (2):
素粒子理論
, 素粒子現象論
Research theme for competitive and other funds (5):
2023 - 2025 機械学習を用いた弦の有効理論の構築
2020 - 2024 オービフォールド特異点の解消とその現象論的応用
2019 - 2022 滑らかなカラビ・ヤウ多様体上のヘテロ型弦理論における素粒子現象論
2017 - 2019 Phenomenological studies of axion and CP violation
2014 - 2016 超弦理論を背景とする5次元超重力理論の素粒子現象論及び宇宙論
Papers (66):
Takaaki Nomura, Hiroshi Okada, Hajime Otsuka. Texture zeros realization in a three-loop radiative neutrino mass model from modular A4 symmetry. Nuclear Physics B. 2024. 1004
Hajime Otsuka, Yutaka Sakamura. Induced moduli oscillation by radiation and space expansion in a higher-dimensional model. Physical Review D. 2024. 109. 11
Keiya Ishiguro, Takafumi Kai, Tatsuo Kobayashi, Hajime Otsuka. Flux Landscape with enhanced symmetry not on SL(2, Z) elliptic points. Journal of High Energy Physics. 2024. 2024. 2
Keiya Ishiguro, Takafumi Kai, Satsuki Nishimura, Hajime Otsuka, Maki Takeuchi. Upper bound on the Atiyah-Singer index from tadpole cancellation. Journal of High Energy Physics. 2024. 2024. 1
Tatsuo Kobayashi, Takaaki Nomura, Hiroshi Okada, Hajime Otsuka. Modular flavor models with positive modular weights: a new lepton model building. Journal of High Energy Physics. 2024. 2024. 1
Stringy constraints on primordial electromagnetic fields in axion inflation
(Seminar at Osaka University 2024)
Top-down modular invariance approach to flavour II
(Modular Invariance Approach to the Lepton and Quark Flavour Problems: from Bottom-up to Top-down 2024)
Modular Flavor Symmetry in Heterotic $E_6$ GUT
(Workshop on Grand Unified Theory, Phenomenology and Cosmology (GUTPC) 2024)
Modular forms and hierarchical Yukawa couplings in heterotic Calabi-Yau compactifications
("Particle Physics and Cosmology from String Compactification" 2nd meeting 2024)