2012 Fiscal Year Final Research Report
Anisotropic inflation from supergravity
| Project/Area Number |
22540274
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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 | Kyoto University |
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Principal Investigator |
SODA Jiro 京都大学, 大学院・理学研究科, 准教授 (00222076)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 宇宙論 / インフレーション / ゲージ場 / 超重力理論 |
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| Research Abstract |
It is known that there exists a non-trivial coupling between scalar fields and kinetic terms of gauge fields. Based on this fact, we found a novel inflationary scenario, the so-called anisotropic inflation. We succeeded in clarifying the existence of the statistical anisotropy in the cosmic microwave temperature fluctuations and the cross correlation between the temperature fluctuations and polarizations. Although we could not prove our model using cosmological data due to the delay of the data release by the Planck team, I am sure we opened a new window for exploring fundamental theory of nature through the cosmological data stemmed from the early universe.
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