Spontaneous symmetry breaking in high energy critical environment by thermal quantum field theory
| Project/Area Number |
26400250
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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 | Hiroshima University |
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Principal Investigator |
Inagaki Tomohiro 広島大学, 情報メディア教育研究センター, 教授 (80301307)
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| Research Collaborator |
Odintsov Sergei D.
Kimura Daiji
Kitadono Yoshio
Sakamoto Hiroki
Nakanishi Ryota
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 自発的対称性の破れ / 非平衡熱場の量子論 / 南部、ヨナ・ラシニオ模型 / インフレーション / 宇宙背景輻射の揺らぎ / ゲージ相互作用する南部、ヨナ・ラシニオ模型 / 複合スカラー場 / 非平衡熱場の量子場 / 宇宙背景輻射 / アトラクター / 国際情報交換（スペイン） / ヤコビの楕円関数 / 国際情報交換（スペイン、中国） / ３次元QED / 正則化依存性 / ゲージ依存性 |
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| Outline of Final Research Achievements |
We have studied high energy critical phenomena associated with spontaneous symmetry breaking based on thermal quantum field theory.
As a fundamental theory for spontaneous symmetry breaking, we have constructed a field theory around oscillating solutions of the equation of motion for the Higgs potential. A procedure to suppress the gauge dependence has been proposed in the analysis of Schwinger-Dyson equation for strong coupling QED. We have also evaluated cosmic microwave background fluctuations induced by the primordial inflation. For a fundamental scalar inflaton field, it is found that the two-loop correction on the fluctuations is much larger than the leading-log correction. Introducing a composite scalar inflaton constructed by fermion and anti-fermion, we have proposed the gauged Nambu-Jona-Lasinio inflation model. It is found that the model represents an attractor which can not be found in a fundamental scalar model.
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Report
(5 results)
Research Products
(32 results)
