2020 Fiscal Year Final Research Report
Cosmic Inflation as a Probe of High Energy Physics
| Project/Area Number |
18K13539
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Keywords | インフレーション / 弦理論 / 大統一理論 / 余剰次元 |
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| Outline of Final Research Achievements |
The Hubble scale during cosmic inflation could be as high as 10 to the 14th power GeV, which is 10 orders of magnitude greater than the energy scale of the Large Hadron Collider. In this project, we developed a theoretical framework for probing new particles predicted by high energy theories, within the so-called cosmological collider program. In particular, we proposed a new approach for probing heavy particles, e.g., predicted by grand unified theories and extra dimensional theories, using the effective field theory approach.
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| Free Research Field |
素粒子論、宇宙論、弦理論
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| Academic Significance and Societal Importance of the Research Achievements |
インフレーションを用いると、地上の加速器では手が届かない「超高エネルギー領域」を探索できると期待される。本研究成果では、インフレーションで探索可能なエネルギー領域を拡大し、余剰次元や力の統一といった「高エネルギー理論のアイディア」を実験的に検証する手法を提案した。今後の宇宙観測実験のデータを合わせることで、素粒子と重力を統一的に記述する「高エネルギー究極理論」の実験的検証が可能になると期待される。
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