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量子渦糸乱流の大規模シミュレーションによる研究II

Research Project

Project/Area Number 20029019
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

町田 昌彦  Japan Atomic Energy Agency, システム計算科学センター, 研究主幹 (60360434)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2009: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2008: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywords計算物理 / 原子・分子物理 / 物性理論 / 低温物性 / シミュレーション工学
Research Abstract

本研究の目的は、近年、飛躍的に発展している巨視的量子ダイナミクスの研究において、更に研究進展を加速させ、新しい概念形成を目指すため、超大規模数値シミュレーション(テラフロップス及びテラバイト級の世界最大のシミュレーションを行う)による量子ダイナミクスの研究を行うことである。尚、本研究で研究を行う具体的対象は、希薄原子ガス及び超流動ヘリウムにおいて共通に現れダそのイナミクスを支配する量子渦糸の多体ダイナミクスであり、計画研究代表者(坪田誠氏)と密接に協力し、超大規模シミュレーションを地球シミュレータ及び研究機関のスパコン等で実施した。その結果、量子乱流の直接シミュレーションとしては、世界最大規模の2096の3乗グリッドでのFFTを用いた超並列シミュレーションに世界で初めて成功し、量子乱流分野にて確認すべき課題であった「量子乱流のコルモゴロフ則のサイズによらない不変性」を実際に確認する等の成果を得た。

Report

(2 results)
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (20 results)

All 2010 2009 2008

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (8 results)

  • [Journal Article] Simulation study for the orientation of the driven vortex lattice in an amorphous superconductor2009

    • Author(s)
      N.Nakai, N.Hayashi, M.Machida
    • Journal Title

      Physica C 469

      Pages: 1106-1106

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] First-principle calculation for the phonon structure on iron-based superconductors2009

    • Author(s)
      H.Nakamura, N.Hayashi, N.Nakai, M.Machida
    • Journal Title

      Physica C 469

      Pages: 1024-1024

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] First-principles calculations of the effect of pressure on the iron-based superconductor LaFeAsO2009

    • Author(s)
      H.Nakamura, M.Machida
    • Journal Title

      Physical Review B 80

      Pages: 165111-165111

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Polarization plateau in atomic Fermi gas loaded on three-leg triangular optical lattice2009

    • Author(s)
      M.Okumura, S.Yamada, M.Machida, T.Sakai
    • Journal Title

      Physical Revelew A 79

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of Heterotic Superconducting-insulator-superconducting Josephson Junctions between Single- and Multi-gap Superconductors2009

    • Author(s)
      Y.Ota, M.Machida, T.Koyama, H.Matsumoto
    • Journal Title

      J.Low Temp.Phys. 102

      Pages: 237003-237003

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical Experiments for Heat Diffusion and Eelated Non-equilibrium Superconducting Dynamics on MgB2 Neutron Detector2009

    • Author(s)
      Masahiko Machida
    • Journal Title

      Nuclear Inst. and Methods in Physics Research A600

      Pages: 210-212

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mott phase in polarized two-component atomic Fermi latticegas2008

    • Author(s)
      Masahiko Machida
    • Journal Title

      Physical Eeview B 78

      Pages: 235117-235117

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stripe Formation in Repulsive 4-leg Hubbard Ladder: Directly-extended DMRG Studies2008

    • Author(s)
      Masahiko Machida
    • Journal Title

      Physica C 468

      Pages: 1141-1141

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum Synchronization Effects in Intrinsic Josephson Junctions2008

    • Author(s)
      Masahiko Machida
    • Journal Title

      Physica C 468

      Pages: 689-689

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum Effects on Capacitively-coupled Intrinsic Josephson Junctions2008

    • Author(s)
      Masahiko Machida
    • Journal Title

      J. Phys. Chem. Solids 60

      Pages: 3221-3221

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical Simulation for Non-equilibrium Superconducting Dynamics at the Transition Edge: Simulation for MgB2 Neutron Detector"2008

    • Author(s)
      Masahiko Machida
    • Journal Title

      J. Low Temp. Phys. 151

      Pages: 58-63

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synchronization Effects in Intrinsic Josephson Junctions by Non-equilibrium Heating2008

    • Author(s)
      Masahlko Machida
    • Journal Title

      J. Phys., Conf. Ser. 129

      Pages: 12027-12027

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] 行列対角化と密度行列繰りこみ群の超並列化:強相関非平衡量子多体系の理解へ向けて2010

    • Author(s)
      町田昌彦
    • Organizer
      スーパーコンピュータワークショップ2010:大規模並列分子シミュレーションの最前線
    • Place of Presentation
      岡崎市 自然科学研究機構
    • Year and Date
      2010-01-14
    • Related Report
      2009 Annual Research Report
  • [Presentation] 量子乱流の大規模シミュレーション:エネルギー散逸ボトルネック効果の可能性2009

    • Author(s)
      町田昌彦
    • Organizer
      第17回磁束線物理国内研究会(VPWJ2009)
    • Place of Presentation
      大阪
    • Year and Date
      2009-12-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] 新規鉄系超伝導体の異方性評価と新しい固有ジョセフソン効果の可能性2009

    • Author(s)
      町田昌彦
    • Organizer
      東北大電気通信研究所共同研究「環境負荷低減に資する超伝導計算機技術に関する研究」研究会
    • Place of Presentation
      仙台
    • Year and Date
      2009-11-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] Theory of Josephson Vortices and Collective Modes in Multi-bands Superconductors2009

    • Author(s)
      町田昌彦
    • Organizer
      The 12th International Workshop on Vortex Matter in Superconductors Lake Yamanaka
    • Place of Presentation
      山中湖(ホテル)
    • Year and Date
      2009-09-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] 量子渦糸の構造とダイナミクス:原子ガスから超流動乱流まで2009

    • Author(s)
      町田昌彦
    • Organizer
      基研研究会「熱場の量子論とその応用」
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2009-09-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] 量子乱流の大規模シミュレーションの現状と展望2009

    • Author(s)
      町田昌彦
    • Organizer
      文科省科研費特定領域「スーパークリーン物質で実現する新しい量子相の物理」箱根パウエル、A03, 04班合同会議
    • Place of Presentation
      箱根(ホテル)
    • Year and Date
      2009-04-21
    • Related Report
      2009 Annual Research Report
  • [Presentation] Quantum Turbulence; Its Universality and Particularity through Massively-parallel Simulation2008

    • Author(s)
      町田昌彦
    • Organizer
      スーパークリーン特定成果報告会
    • Place of Presentation
      (奈良新公会堂)、奈良
    • Year and Date
      2008-12-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] 箱形トラップ中でのFFLO状態と強結合の効果2008

    • Author(s)
      町田昌彦
    • Organizer
      日本物理学会2008年秋季大会
    • Place of Presentation
      盛岡大学
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2018-03-28  

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