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2012 Fiscal Year Annual Research Report

クォーク力学に基づく原子核構造

Planned Research

Project AreaResearch on the Emergence of Hierarchical Structure of Matter by Bridging Particle, Nuclear and Astrophysics in Computational Science
Project/Area Number 20105003
Research InstitutionThe University of Tokyo

Principal Investigator

初田 哲男  東京大学, 理学(系)研究科(研究院), 客員教授 (20192700)

Co-Investigator(Kenkyū-buntansha) 肥山 詠美子  独立行政法人理化学研究所, 仁科加速器研究センター, 准主任研究員 (10311359)
大塚 孝治  東京大学, 理学(系)研究科(研究院), 教授 (20201379)
中村 純  広島大学, 情報メディア教育研究センター, 教授 (30130876)
青木 慎也  筑波大学, 数理物質科学研究科(系), 教授 (30192454)
中務 孝  独立行政法人理化学研究所, 仁科加速器研究センター, 准主任研究員 (40333786)
Project Period (FY) 2008-04-01 – 2013-03-31
Keywords格子QCD / 核力 / 高密度物質 / ハイパー核 / 原子核構造 / 密度汎関数法
Outline of Annual Research Achievements

今年度は、各研究テーマについて以下のような進展があった。
1.格子QCDによる核力研究では、虚時間方向の基底状態飽和に到達せずとも核力ポテンシャルを構築できる新しい方法を開発し実装した。これにより、核力ポテンシャルの中距離・遠距離での振る舞いが著しく改善された。さらに、核力の中心力とテンソル力だけでなく、スピン軌道力を導出することに初めて成功した。ハイペロン力については、SU(3)極限でのハイペロン相互作用の精密化、SU(3)の破れを考慮した計算の進展があった。多体力については、計算時間を大幅に短縮できる統一縮約法を開発し実装した。また、中間子ーバリオン散乱、中間子ー中間子散乱への拡張を行った。
2.少数粒子系厳密計算については、ガウス基底展開法の開発を進め、任意の相互作用を持ちチャンネル結合する5体系厳密計算を可能にした。 この手法は、束縛状態、連続状態、共鳴状態も同じ枠組みで扱えるという利点もある。
3.モンテカルロ殻模型を用いた原子核構造計算では、アルゴリズムの改良による一桁近い計算量の縮減に加えて、物理量の正確な評価を可能にするエネルギー揺らぎを用いた新たな外挿法を開発し有効性を確かめた。これらの手法を用いて、軽い核のコア無し殻模型計算や中重核の殻模型計算を実行した。
4.密度汎関数法計算では、静的密度汎関数法計算、時間依存密度汎関数法計算と線形応答、線形応答領域を超える時間依存計算、などを可能にする新たな計算コードを開発した。
5.高密度QCD計算においては、昨年度までに導出したフュガシティ展開公式を応用し、有限化学ポテンシャルがあるゲージ理論におけるリー=ヤンのゼロ点分布とその振る舞いを詳細に解析した。

Research Progress Status

24年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

24年度が最終年度であるため、記入しない。

  • Research Products

    (27 results)

All 2013 2012 Other

All Journal Article (21 results) (of which Peer Reviewed: 20 results) Presentation (4 results) (of which Invited: 3 results) Remarks (2 results)

  • [Journal Article] Tensor correlation, pairing interaction and deformation in Ne isotopes and Ne hypernuclei2013

    • Author(s)
      A Li et al.
    • Journal Title

      Phys. Rev.

      Volume: C87 Pages: 014333

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.87.014333

    • Peer Reviewed
  • [Journal Article] Observation of the Helium 7 Lambda hypernucleus by the (e,e'K+) reaction2013

    • Author(s)
      S.N. Nakamura et al.
    • Journal Title

      Phys.Rev.Lett.

      Volume: 110 Pages: 012502

    • DOI

      http://dx.doi.org/10.1103/PhysRevLett.110.012502

    • Peer Reviewed
  • [Journal Article] Unified contraction algorithm for multi-baryon correlators on the lattice2013

    • Author(s)
      T. Doi
    • Journal Title

      Comput. Phys. Commun.

      Volume: 184 Pages: 117

    • DOI

      http://arxiv.org/abs/arXiv:1205.0585

    • Peer Reviewed
  • [Journal Article] Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect2012

    • Author(s)
      Yutaka Utsuno, Takaharu Otsuka, B.Alex Brown, Michio Honma, Takahiro Mizusaki, Noritaka Shimizu
    • Journal Title

      Phys.Rev. C

      Volume: 86 Pages: 051301

    • DOI

      10.1103/PhysRevC.86.051301

    • Peer Reviewed
  • [Journal Article] Benchmarks of the full configuration interaction, Monte Carlo shell model, and no-core full configuration methods2012

    • Author(s)
      T. Abe, P. Maris, T. Otsuka, N. Shimizu, Y. Utsuno, J.P. Vary
    • Journal Title

      Phys.Rev. C

      Volume: 86 Pages: 054301

    • DOI

      10.1103/PhysRevC.86.054301

    • Peer Reviewed
  • [Journal Article] EoS of finite density QCD with Wilson fermions by Multi-Parameter Reweighting and Taylor expansion2012

    • Author(s)
      Keitaro Nagata, Atsushi Nakamura
    • Journal Title

      JHEP

      Volume: 1204 Pages: 092

    • DOI

      10.1007/JHEP04(2012)092

    • Peer Reviewed
  • [Journal Article] Gaussian expansion method for few-body systems and its applications to atomic and nuclear physics2012

    • Author(s)
      Emiko Hiyama
    • Journal Title

      PTEP 2012

      Pages: 01A204

    • DOI

      10.1093/ptep/pts015

    • Peer Reviewed
  • [Journal Article] Lattice quantum chromodynamical approach to nuclear physics2012

    • Author(s)
      S. Aoki et al.
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2012 Pages: 01A105

    • DOI

      http://dx.doi.org/10.1093/ptep/pts010

    • Peer Reviewed
  • [Journal Article] Towards extremely dense matter on the lattice2012

    • Author(s)
      K Nagata et al.
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2012 Pages: 01A103

    • DOI

      http://dx.doi.org/10.1093/ptep/pts003

    • Peer Reviewed
  • [Journal Article] New-generation Monte Carlo shell model for the K computer era2012

    • Author(s)
      N. Shimizu et al.
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2012 Pages: 01A205

    • DOI

      http://dx.doi.org/10.1093/ptep/pts012

    • Peer Reviewed
  • [Journal Article] Density functional approaches to collective phenomena in nuclei: Time-dependent density functional theory for perturbative and non-perturbative nuclear dynamics2012

    • Author(s)
      T. Nakatsukasa
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2012 Pages: 01A207

    • DOI

      http://dx.doi.org/10.1093/ptep/pts016

    • Peer Reviewed
  • [Journal Article] Hadron-Hadron Interactions from Imaginary-time Nambu-Bethe-Salpeter Wave Function on the Lattice2012

    • Author(s)
      N. Ishii et al.
    • Journal Title

      Phys. Lett.

      Volume: B712 Pages: 437-441

    • DOI

      http://dx.doi.org/10.1016/j.physletb.2012.04.076

    • Peer Reviewed
  • [Journal Article] Two-Baryon Potentials and H-Dibaryon from 3-flavor Lattice QCD Simulations2012

    • Author(s)
      T. Inoue et al.
    • Journal Title

      Nucl. Phys.

      Volume: A881 Pages: 28-43

    • DOI

      http://dx.doi.org/10.1016/j.nuclphysa.2012.02.008

    • Peer Reviewed
  • [Journal Article] Glauber-model analysis of total reaction cross sections for Ne, Mg, Si, and S isotopes with Skyrme-Hartree-Fock densities2012

    • Author(s)
      W. Horiuchi et al.
    • Journal Title

      Phys.Rev.

      Volume: C86 Pages: 024614

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.86.024614

    • Peer Reviewed
  • [Journal Article] Shape transition and fluctuation in neutron-rich Cr isotopes around N = 402012

    • Author(s)
      K. Sato et al.
    • Journal Title

      Phys. Rev.

      Volume: C86 Pages: 024316

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.86.024316

    • Peer Reviewed
  • [Journal Article] Effect of time-odd mean fields on inertial parameters of the quadrupole collective Hamiltonian2012

    • Author(s)
      N. Hinohara et al.
    • Journal Title

      Phys.Rev.

      Volume: C85 Pages: 024323

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.85.024323

    • Peer Reviewed
  • [Journal Article] Shell-model study of boron, carbon, nitrogen, and oxygen isotopes with a monopole-based universal interaction2012

    • Author(s)
      C. Yuan et al.
    • Journal Title

      Phys. Rev.

      Volume: C85 Pages: 064324

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.85.064324

    • Peer Reviewed
  • [Journal Article] Shape phase transitions in the interacting boson model: Phenomenological versus microscopic descriptions2012

    • Author(s)
      J. Kotila et al.
    • Journal Title

      Phys. Rev.

      Volume: C85 Pages: 054309

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.85.054309

  • [Journal Article] Variational procedure for nuclear shell-model calculations and energy-variance extrapolation2012

    • Author(s)
      N. Shimizu et al.
    • Journal Title

      Phys. Rev.

      Volume: C85 Pages: 054301

    • DOI

      http://dx.doi.org/10.1103/PhysRevC.85.054301

    • Peer Reviewed
  • [Journal Article] Structure of 10ΛBe and 10ΛB hypernuclei studied with the four-body cluster model2012

    • Author(s)
      e. Hiyama et al.
    • Journal Title

      Prog. Theor. Phys.

      Volume: 128 Pages: 105-124

    • DOI

      http://dx.doi.org/10.1143/PTP.128.105

    • Peer Reviewed
  • [Journal Article] Linear correlations between 4He trimer and tetramer energies calculated with various realistic 4He potentials2012

    • Author(s)
      E. Hiyama et al.
    • Journal Title

      Phys. Rev.

      Volume: A85 Pages: 062505

    • DOI

      http://dx.doi.org/10.1103/PhysRevA.85.062505

    • Peer Reviewed
  • [Presentation] Stochastic approach to correlations beyond the mean field with the Skyrme interaction2012

    • Author(s)
      Y. Fukuoka
    • Organizer
      Nuclear Structure and Dynamics (NSD2012)
    • Place of Presentation
      atija, Croatia
    • Year and Date
      2012-07-09 – 2012-07-13
    • Invited
  • [Presentation] Study of the low temperature and high density states by using lattice QCD simulations2012

    • Author(s)
      S. Motoki
    • Organizer
      30th International Symposium on Lattice Field Theory (Lattice 2012)
    • Place of Presentation
      Cairns, Australia
    • Year and Date
      2012-06-24 – 2012-06-29
  • [Presentation] Few-baryon interactions from lattice QCD2012

    • Author(s)
      T. Doi
    • Organizer
      30th International Symposium on Lattice Field Theory (Lattice 2012)
    • Place of Presentation
      Cairns, Australia
    • Year and Date
      2012-06-24 – 2012-06-29
    • Invited
  • [Presentation] Interacting boson model and nucleons2012

    • Author(s)
      T. Otsuka
    • Organizer
      Beauty in Physics: Theory and Experiment
    • Place of Presentation
      Cocoyoc, Mexico
    • Year and Date
      2012-05-14 – 2012-05-18
    • Invited
  • [Remarks] 計算科学による素粒子・原子核・宇宙の融合

    • URL

      http://bridge.kek.jp/

  • [Remarks] 60秒でわかる?量子色力学で迫る物質と宇宙の起源と構造

    • URL

      http://www.youtube.com/watch?v=XeFMRR6pyXU

URL: 

Published: 2018-02-02  

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