Entanglement of primordial fluctuation
| Project/Area Number |
23540297
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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 | Nagoya University |
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Principal Investigator |
YASUSADA Nambu 名古屋大学, 理学(系)研究科(研究院), 准教授 (40212112)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | entanglement / inflation / quantum correlation / detector model / negativity / エンタングルメント / 量子マスター方程式 / 繰り込み群 / 量子ゆらぎ / 量子ゆらぎとエンタングルメント / 古典化 / wave optics / wave scattering / detector / 量子相関 / インフレーション |
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| Outline of Final Research Achievements |
We investigate entanglement structure of a quantum field in the inflationary universe using a particle detector model. Entanglement of the quantum field can be detectable by analyzing quantum correlation between two detectors interacting with the quantum field. We found that it is impossible to detect entanglement of the quantum field for detectors separated with distances larger than the Hubble horizon scale. This result implies that the quantum field in the inflationary universe loses its quantum nature for super Horizon scale and can be treated as a classical field.
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Report
(5 results)
Research Products
(17 results)
