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2023 Fiscal Year Annual Research Report

Clustering as a window on the hierarchical structure of quantum systems

Compiling the Research Achievements

Project AreaClustering as a window on the hierarchical structure of quantum systems
Project/Area Number 23H05416
Research InstitutionTokyo Institute of Technology

Principal Investigator

中村 隆司  東京工業大学, 理学院, 教授 (50272456)

Project Period (FY) 2023-04-01 – 2024-03-31
Keywords実験核物理 / 理論核物理 / ハドロン物理 / 原子物理 / 分子科学
Outline of Annual Research Achievements

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(2018-2022年度)」では、クォーク、ハドロン、原子核、原子、分子という微視的物質世界の階層構造がどのようなメカニズムで形成されたのか、という自然科学の根源的問題に対し、各階層の研究者の力を結集し、階層間の壁を超えた連携研究を進めてきた。従来型階層の境界「セミ階層」に現れる多彩な「量子クラスター」を共通のキーワードとし、それぞれの階層を超えた量子系の多体相関、普遍的な現象や法則を見出すことを目指し、連携研究を進めた。本科研費では、そのとりまとめ事業を行った。
まずは、事後評価に対してこれまでの実績をまとめた。5年間の実績として、1)ストレンジネスを含むバリオン間力の精密測定、2)原子核層と原子層における三体力の研究、3)格子QCD計算と少数計算の融合による新奇クラスターの予言、4)階層変化を可視化する量子シミュレーターの完成、5)さまざまな新奇クラスターの発見(中間子原子核、ハドロン分子、多中性子クラスター、エフィモフ三量体)などの成果がハイライトとなっていることを確認し、階層連携の枠組みでの位置付けや領域内での評価などを行った。事後評価の結果はA+評価(研究領域の設定目的に照らして、期待以上の成果があった)であった。
また、9月には総括のための領域研究会を行い、これまでの研究成果の集大成を行った。一方、European Physical Journal Aにおいて取りまとめの論文集を出版することを総括班主導で提案した。出版社側の承認は得られており、2024年度の完成を目指し、主要成果を中心として論文の準備が進められている。総括班会議ではさらに、今後の連携に向けた議論などを行った。
本領域研究で開拓された量子クラスターを鍵とした物質階層の研究が、今後新たな潮流として進展していくことが期待される。

Research Progress Status

令和5年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和5年度が最終年度であるため、記入しない。

  • Research Products

    (29 results)

All 2024 2023 Other

All Int'l Joint Research (6 results) Journal Article (9 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 9 results,  Open Access: 6 results) Presentation (10 results) (of which Int'l Joint Research: 10 results,  Invited: 6 results) Remarks (3 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of Surrey/University of York(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      University of Surrey/University of York
  • [Int'l Joint Research] LPC CAEN/GANIL/IJC-Lab(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      LPC CAEN/GANIL/IJC-Lab
    • # of Other Institutions
      2
  • [Int'l Joint Research] GSI/Technical University Darmstadt/University of Koln(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      GSI/Technical University Darmstadt/University of Koln
    • # of Other Institutions
      2
  • [Int'l Joint Research] IMP, CAS/Peking University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      IMP, CAS/Peking University
  • [Int'l Joint Research] IBS/Seoul National University(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      IBS/Seoul National University
  • [Int'l Joint Research]

    • # of Other Countries
      14
  • [Journal Article] Onset of collectivity for argon isotopes close to N = 322024

    • Author(s)
      B.D. Linh, A. Corsi, T.Nakamura, et al.
    • Journal Title

      Physical Review C

      Volume: 109 Pages: 034312-1-15

    • DOI

      10.1103/PhysRevC.109.034312

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mass, Spectroscopy, and Two-Neutron Decay of 16Be2024

    • Author(s)
      B. Monteagudo, F.M.Marques, J.Gibelin, T. Nakamura, et al.
    • Journal Title

      Physical Review Letters

      Volume: 132 Pages: 082501-1-6

    • DOI

      10.1103/PhysRevLett.132.082501

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Validation of the 10Be Ground-State Molecular Structure Using 10Be(p,p alpha)6He Triple Differential Reaction Cross-Section Measurements2023

    • Author(s)
      P.J. Li, D. Beaumal, J.Lee, T.Nakamura, et al.
    • Journal Title

      Physical Review Letters

      Volume: 131 Pages: 212501-1-7

    • DOI

      10.1103/PhysRevLett.131.212501

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] First observation of 28O2023

    • Author(s)
      Y.Kondo, T.Nakamura, et al.,
    • Journal Title

      Nature

      Volume: 620 Pages: 965-970

    • DOI

      10.1038/s41586-023-06352-6

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Level structures of 56,58Ca cast doubt on a doubly magic 60Ca2023

    • Author(s)
      S.Chen, F.Browne, P.Doornenbal, T.Nakamura et al.
    • Journal Title

      Physics Letters B

      Volume: 58 Pages: 138025-1-7

    • DOI

      10.1016/j.physletb.2023.138025

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Intruder configurations in 29 Ne at the transition into the island of inversion : Detailed structure study of 28 Ne2023

    • Author(s)
      H. Wang, M. Yasuda, Y. Kondo, T. Nakamura, et al.
    • Journal Title

      Physics Letters B

      Volume: 843 Pages: 138038-1-9

    • DOI

      10.1016/j.physletb.2023.138038

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] STRASSE: a silicon tracker for quasi-free scattering measurements at the RIBF2023

    • Author(s)
      H.N. Liu, F. Flavigny, H. Baba, T.Nakamura, et al.
    • Journal Title

      The European Physical Journal A

      Volume: 59 Pages: 121-1-26

    • DOI

      10.1140/epja/s10050-023-01018-3

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Searching for universality of dineutron correlation at the surface of Borromean nuclei2023

    • Author(s)
      A. Corsi, Y. Kubota, T. Nakamura, et al.
    • Journal Title

      Physics Letters B

      Volume: 840 Pages: 137875-1-6

    • DOI

      10.1016/j.physletb.2023.137875

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiple Mechanisms in Proton-Induced Nucleon Removal at ~100 MeV/Nucleon2023

    • Author(s)
      T. Pohl, Y.L.Sun, A.Obertelli, T.Nakamura, et al.
    • Journal Title

      Physical Review Letters

      Volume: 130 Pages: 172501-1-8

    • DOI

      10.1103/PhysRevLett.130.172501

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Halo and deformation in 31Ne revealed by Coulomb and nuclear breakup reactions2024

    • Author(s)
      Takashi Nakamura
    • Organizer
      Reimei Workshop : Intersection of Nuclear Structure and Direct Reaction
    • Int'l Joint Research / Invited
  • [Presentation] Coulomb and nuclear breakup reactions of a halo nucleus 31Ne2023

    • Author(s)
      Takashi Nakamura, Takato Tomai, Yosuke Kondo
    • Organizer
      6th Joint meeting of the APS division of Nuclear Physics and the Physical Society of Japan
    • Int'l Joint Research
  • [Presentation] Short-range correlation study of unstable nuclei using (p,pd) reaction2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      5th International Workshop on Quasi-Free Scattering with Radioactive-Ion Beams 2023
    • Int'l Joint Research / Invited
  • [Presentation] Observation of 28O: What's next?2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      The past, Present, and Future of Nuclear Structure Theory in the FRIB ERA
    • Int'l Joint Research / Invited
  • [Presentation] Study of neutron and proton density distribution and single particle states using the (p,pn) and (p,2p) reactions2023

    • Author(s)
      Yohei Matuda, Takashi Nakamura
    • Organizer
      SAMURAI International Collaboration Workshop
    • Int'l Joint Research
  • [Presentation] DayOne-SAMURAI03, Halo Coulomb breakup-Analysis Update-17B,22C2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      SAMURAI International Collaboration Workshop
    • Int'l Joint Research
  • [Presentation] A New Generation Neutron Detector Array2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      SAMURAI International Collaboration Workshop
    • Int'l Joint Research
  • [Presentation] Exploring multi-neutron systems at SAMURAI at RIBF2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      Direct reactions and spectroscopy with hydrogen targets: past 10 years at the RIBF and future prospects
    • Int'l Joint Research / Invited
  • [Presentation] Weakly bound and unbound nuclei near and beyond the neutron drip line2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      International Symposium on Physics of Unstable Nuclei 2023
    • Int'l Joint Research / Invited
  • [Presentation] Exploring neutron-rich extremes of the nuclear landscape2023

    • Author(s)
      Takashi Nakamura
    • Organizer
      UK Nuclear Physics Conference (IOP)
    • Int'l Joint Research / Invited
  • [Remarks] 新学術領域 量子クラスターで読み解く物質の階層構造

    • URL

      http://be.nucl.ap.titech.ac.jp/cluster/index.html

  • [Remarks] 新学術領域 量子クラスターで読み解く物質の階層構造 英語版

    • URL

      http://be.nucl.ap.titech.ac.jp/cluster/eng/index.html

  • [Remarks] 極限原子核の謎を解く要となる新たな酸素同位体の発見

    • URL

      https://www.titech.ac.jp/news/2023/067382

  • [Funded Workshop] International School for Strangeness Nuclear Physics School 2023 (SNP School 2023)2023

URL: 

Published: 2024-12-25  

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