• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Universal quantum many-body phenomena induced by quantum few-body clusters

Research Project

Project/Area Number 19K21028
Project/Area Number (Other) 18H05838 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionTohoku University

Principal Investigator

Endo Shimpei  東北大学, 学際科学フロンティア研究所, 助教 (30824453)

Project Period (FY) 2018-08-24 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords冷却原子気体 / 量子少数多体問題 / 量子物理学(理論) / 少数多体問題 / 極低温原子気体 / 量子クラスター / 量子物理学(理論)
Outline of Research at the Start

本研究では、極低温まで冷却した原子気体で観測される、量子力学的効果由来の束縛状態や共鳴状態(量子クラスター)を研究する。特に、近年実現された相互作用の強い極低温原子気体において、どのような量子クラスターが現れるか調べる。また、この量子少数クラスターが、多体媒質中でどのように振る舞うかを調べ、少数系と多体系の関係や協奏現象を探る。

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.

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。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (16 results)

All 2020 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 7 results)

  • [Journal Article] Virial expansion coefficients in the unitary Fermi gas2020

    • Author(s)
      Endo Shimpei
    • Journal Title

      SciPost Physics Proceedings

      Volume: 3 Issue: 3 Pages: 049-049

    • DOI

      10.21468/scipostphysproc.3.049

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Eigenvalues of Two-State Quantum Walks Induced by the Hadamard Walk2020

    • Author(s)
      Shimpei Endo, Takako Endo, Takashi Komatsu, Norio Konno
    • Journal Title

      entropy

      Volume: 22 Issue: 1 Pages: 1-13

    • DOI

      10.3390/e22010127

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 量子少数系にけるユニバーサリティとEfimov状態の物理2019

    • Author(s)
      遠藤晋平
    • Journal Title

      原子核研究

      Volume: 64(1) Pages: 90-105

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 二成分Bose系におけるEfimov状態の普遍的挙動2020

    • Author(s)
      西浦 大樹、遠藤 晋平
    • Organizer
      日本物理学会年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 3成分Fermi気体の状態方程式におけるEfimov状態の効果2020

    • Author(s)
      遠藤 晋平、田島裕之
    • Organizer
      日本物理学会年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ユニタリー原子気体における量子少数多体問題の研究2020

    • Author(s)
      遠藤 晋平
    • Organizer
      日本物理学会年次大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 冷却原子におけるクラスターの普遍性:現状と展望2020

    • Author(s)
      遠藤 晋平
    • Organizer
      新学術領域研究「量子クラスターで読み解く物質の階層構造」スクール
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 冷やすとは?2020

    • Author(s)
      遠藤 晋平
    • Organizer
      第3回若手放談会:エキゾチック核物理の将来
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Universality of few-body clusters and their applications to many-body systems2020

    • Author(s)
      Endo Shimpei
    • Organizer
      2nd workshop ``Clusters in quantum systems: from atoms to nuclei and hadrons"
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Universal few-body clusters in cold atoms2019

    • Author(s)
      遠藤 晋平
    • Organizer
      第1回 冷却原子研究会「アトムの会」
    • Related Report
      2019 Annual Research Report
  • [Presentation] Universal few-body clusters in cold atoms2019

    • Author(s)
      Endo Shimpei
    • Organizer
      24th European conference on few-body problems in physics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Few-body aspects of cold atoms2019

    • Author(s)
      Endo Shimpei
    • Organizer
      New aspects of few-nucleon systems and related topics
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Universal few-body physics and clusters with ultracold atoms2019

    • Author(s)
      遠藤晋平
    • Organizer
      第2回RIBF若手放談会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 3体Bose系における有限角運動量チャンネルの効果2019

    • Author(s)
      遠藤晋平
    • Organizer
      日本物理学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Universal few-body clusters in ultracold atoms2019

    • Author(s)
      Shimpei Endo
    • Organizer
      Clusters in quantum systems: from atoms to nuclei and hadrons
    • Related Report
      2018 Annual Research Report
  • [Presentation] Universal few-body physics in cold atoms2018

    • Author(s)
      Shimpei Endo
    • Organizer
      Reimei Workshop: Universal physics in Many-Body Quantum Systems -- From Atoms to Quarks --
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited

URL: 

Published: 2018-08-27   Modified: 2024-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi