研究者総覧
論文
- タイトル
- タイトル（英）
- Subcritical regime of hybrid inflation with modular $A_4$ symmetry
- 参照URL
- https://researchmap.jp/takahiro-yoshida/published_papers/40253141
- 著者
- 著者（英）
- Yoshihiro Gunji,Koji Ishiwata,Takahiro Yoshida
- 担当区分
- 概要
- 概要（英）
- Abstract We consider a supergravity model that has the modular A4 symmetry and discuss the interplay between the neutrino mixing and inflation. The model contains right- handed neutrinos that have the Majorana masses and additional Yukawa couplings to the waterfall field. In the model an active neutrino is massless and we find that only the inverted hierarchy is allowed and the Majorana phase is predicted to be around ±(120–180)° from the observed neutrino mixing data. In the early universe, one of right-handed sneutrinos plays the role of the inflaton field. Focusing on the subcritical regime of the hybrid inflation that is consistent with the cosmic microwave background data, we analyze the dynamics of the scalar sector and derive an upper bound (1010) GeV on the scale of the Majorana mass.
- 出版者・発行元
- 出版者・発行元（英）
- Springer Science and Business Media LLC
- 誌名
- 誌名（英）
- Journal of High Energy Physics
- 巻
- 2022
- 号
- 11
- 開始ページ
- 終了ページ
- 出版年月
- 2022年11月2日
- 査読の有無
- 査読有り
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1007/jhep11(2022)002
- 共同研究・競争的資金等の研究課題
研究者
𠮷田 貴裕
(ヨシダ タカヒロ)