2012 Fiscal Year Final Research Report
Research on Gravitational Physics based in a Cosmological Setting
| Project/Area Number |
22540291
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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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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| Project Period (FY) |
2010 – 2012
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| Keywords | 重力理論 / ダークエネルギー / インフレーション / 素粒子統一理論 / 宇宙論 |
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| Research Abstract |
We study most fundamental and important subjects on cosmology as gravitational physics. As for the subject on the early universe, we analyze the so called cosmological singularity problem by Horava-Lifshitz gravity theory and the origin of inflation based on superstring theory. We also study dark energy problem mainly by a bigravity theory. We find that dark energy (a cosmological constant) naturally appears as an attractor in this model.
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