2018 Fiscal Year Final Research Report
Systematic Study with Organized Combinations of Three Approaches for Gravitational Theories
| Project/Area Number |
16K05362
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Waseda University |
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Principal Investigator |
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| Research Collaborator |
Barrow John Cambridge大, 教授
Gibbons Gary Cambridge大, 教授
Starobinsky Alexei Landau研, 教授
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | 重力理論 / ダークエネルギー / 宇宙論 / インフレーション / 素粒子統一理論 |
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| Outline of Final Research Achievements |
General Relativity has been confirmed by many experiments and observations. However, we have also found very important and serious mysteries in cosmology and gravitation (dark energy and inflation). In order to solve those problems, many modified gravitational theories have been proposed. To judge which theory is correct, we believe that we should perform a systematic study of those theories instead of independent analysis. Here I have proposed three approaches for gravitational theories ([I] Effective Field Approach, [II] Fundamental Theoretical Approach, [III] General Relativistic Approach), and performed a systematic study with organized combinations of those three approaches to analyze dark energy problem and inflation.
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| Free Research Field |
宇宙物理学
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| Academic Significance and Societal Importance of the Research Achievements |
重力は非常に不思議な力で、ニュートン重力理論やアインシュタインの一般相対性理論は現代物理学を進展させる重要な鍵となった。宇宙論、ブラックホール、重力波というまったく新しい研究分野を開拓し、宇宙に関する知識も飛躍的に伸びた。このように重力の研究は、ことあるごとに物理学を大きく進化させてきたが、いままさに、力の統一や量子重力といった超ミクロの世界と広大な宇宙という超マクロの世界の両極端で人類は大きな謎に遭遇し、その答えの鍵としての重力が注目されている。本研究では3つの系統的な手法を提案し、その手法を有機的に組み合わせ,総合的な観点から様々な重力理論の検証を行う。
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