2019 Fiscal Year Final Research Report
Universal quantum many-body phenomena induced by quantum few-body clusters
| Project/Area Number |
19K21028
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| Project/Area Number (Other) |
18H05838 (2018)
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund (2019)
Single-year Grants (2018) |
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| Review Section |
0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
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| Research Institution | Tohoku University |
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Principal Investigator |
Endo Shimpei 東北大学, 学際科学フロンティア研究所, 助教 (30824453)
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| Project Period (FY) |
2018-08-24 – 2020-03-31
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| Keywords | 冷却原子気体 / 量子少数多体問題 |
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| Outline of Final Research Achievements |
We have studied universal behaviour of few- and many-body quantum systems with resonant interactions. Firstly, we study 3-body systems with large angular momentum. We have found that the long-range part of inter-atomic interactions can induce specific behaviour for the 3-body systems with large angular momenta. We have also studied how such 3-body phenomena can induce strong 3-body correlations in a many-body quantum system. In particular, we have found that there appears a new quantum phase induced by a strong 3-body correlations induced by the presence of 3-body states. We have also published a japanese article which describes in details the universality of few- and many-body quantum systems.
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| Free Research Field |
冷却原子気体
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| Academic Significance and Societal Importance of the Research Achievements |
冷却原子気体の実験で近年３原子が集まったクラスター状態が観測された。この発見以後、量子少数系を探る研究が急速に進展した。驚くことに、量子少数クラスターは、冷却原子、原子核、物質中の電子など全く異なる系が同じ挙動を示しうることがわかってきた。本研究ではそのような性質が従来研究されてこなかった、より複雑な場合において、同様に成立するかを探る研究であり、原子・原子核・電子など幅広い系について量子力学の示す本質をとらえようとするものである。また、本研究において出版した講義ノートは普遍的な少数多体現象を日本語で解説した初めての文献であり、次世代が量子の世界の本質を理解する一助になるものと期待される。
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