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Emergence of functional dynamics in heterogeneously-connected dynamical elements

Research Project

Project/Area Number 18K03471
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
Research InstitutionOsaka Electro-Communication University

Principal Investigator

Yanagita Tatsuo  大阪電気通信大学, 工学部, 教授 (80242262)

Co-Investigator(Kenkyū-buntansha) 中尾 裕也  東京工業大学, 工学院, 教授 (40344048)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords非線形・非平衡ダイナミクス / ビーズスプリングモデル / ハミルトン力学系 / 非一様性 / 特異摂動論 / エネルギー等分配 / ネットワーク / 高分子 / ハミルトン力学 / 緩和現象 / 多時間スケール / 高分子モデル / 準平衡状態 / 非線形ダイナミクス / 非一様エネルギー / マルコフ連鎖モンテカルロ法 / 構造デザイン / 多スケールダイナミクス / 非線形力学 / 緩和過程 / エネルギー不均一運動 / ヘテロ結合力学モデル / 非平衡ダイナミクス
Outline of Final Research Achievements

Imhomodenous local dynamics is an important role in the function of biopolymer. We consider the Hamiltonian dynamics of the bead-spring molecule which is known as a simple coarse-grained model for polymer. The model molecule interacts with solvent particles. We have shown the following both theoretically and numerically: 1) The solvent particles are more energetic than that of the model molecule. 2) inhomogeneous energy state in the molecule lasts a long time, which we call quasi-equilibrium. 3) the stability of the form of the molecule changes by excitation of vibrational mode in the molecule, which we call dynamical stiffness. These mathematical mechanisms of non-equilibrium phenomena might be a key role in the function of biopolymer.

Academic Significance and Societal Importance of the Research Achievements

生化学反応は構成要素のヘテロ結合により作り出された非平衡で多スケールのダイナミクスであり,分子の揺らぎや局所的な運動が機能に密接に関連している.高分子を粗視化した数理モデルであるビーズスプリング系を理論的,数値的に解析し,多時間スケールな結合構造から創出される現象:1)長時間維持される非平衡状態,2)高分子,溶媒のエネルギー非一様性,3)分子内での非一様なエネルギー状態,4)エネルギー励起に伴う分子形態の動的な変化,の数理機構を解明した.これらの基本機構が解明は,生体反応をはじめ交通網,流通網などの社会システムで起こりうる非一様性の生成や制御に対する指針が与えられ学際的な意義もある.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (25 results)

All 2021 2020 2019 2018

All Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (17 results) (of which Int'l Joint Research: 8 results,  Invited: 4 results)

  • [Journal Article] Nonlinear phase-amplitude reduction of delay-induced oscillations2020

    • Author(s)
      Kotani Kiyoshi、Ogawa Yutaro、Shirasaka Sho、Akao Akihiko、Jimbo Yasuhiko、Nakao Hiroya
    • Journal Title

      Physical Review Research

      Volume: 2 Issue: 3 Pages: 033106-033122

    • DOI

      10.1103/physrevresearch.2.033106

    • NAID

      120006953169

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Turing patterns in a network-reduced FitzHugh-Nagumo model2020

    • Author(s)
      Carletti Timoteo、Nakao Hiroya
    • Journal Title

      Physical Review E

      Volume: 101 Issue: 2 Pages: 022203-0222015

    • DOI

      10.1103/physreve.101.022203

    • NAID

      120006953174

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Semiclassical optimization of entrainment stability and phase coherence in weakly forced quantum limit-cycle oscillators2020

    • Author(s)
      Kato Yuzuru、Nakao Hiroya
    • Journal Title

      Physical Review E

      Volume: 101 Issue: 1 Pages: 012210-012219

    • DOI

      10.1103/physreve.101.012210

    • NAID

      120006953175

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] NUMERICAL ANALYSIS OF NEW OSCILLATORY MODE OF BEAD-SPRING MODEL2019

    • Author(s)
      YANAGITA Tatsuo、KONISHI Tetsuro
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 75 Issue: 2 Pages: I_125-I_133

    • DOI

      10.2208/jscejam.75.2_I_125

    • NAID

      130007795410

    • ISSN
      2185-4661
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optimization of linear and nonlinear interaction schemes for stable synchronization of weakly coupled limit-cycle oscillators2019

    • Author(s)
      Watanabe Nobuhiro、Kato Yuzuru、Shirasaka Sho、Nakao Hiroya
    • Journal Title

      Physical Review E

      Volume: 100 Issue: 4 Pages: 042205-0422020

    • DOI

      10.1103/physreve.100.042205

    • NAID

      120006953177

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Semiclassical phase reduction theory for quantum synchronization2019

    • Author(s)
      Kato Yuzuru、Yamamoto Naoki、Nakao Hiroya
    • Journal Title

      Physical Review Research

      Volume: 1 Issue: 3 Pages: 033012-0330127

    • DOI

      10.1103/physrevresearch.1.033012

    • NAID

      120006953178

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phase reduction and synchronization of a network of coupled dynamical elements exhibiting collective oscillations2018

    • Author(s)
      Hiroya Nakao, Sho Yasui, Masashi Ota, Kensuke Arai, and Yoji Kawamura
    • Journal Title

      Chaos

      Volume: 28 Issue: 4 Pages: 045103-045103

    • DOI

      10.1063/1.5009669

    • NAID

      120006953245

    • Related Report
      2020 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Koopman eigenfunctionals and phase-amplitude reduction of rhythmic reaction-diffusion systems2018

    • Author(s)
      H. Nakao and I. Mezic
    • Journal Title

      Proceedings of the SICE Annual Conference 2018

      Volume: 1 Pages: 74-77

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 強結合 Bead-Spring 分子の準平衡状態の解析2021

    • Author(s)
      柳田達雄,小西哲郎
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 束縛鎖状系の運動エネルギーと分散の質量比依存性2021

    • Author(s)
      小西哲郎,柳田達雄
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Dynamics of bead-spring model in quasi-equilibrium2021

    • Author(s)
      Tatsuo Yanagita
    • Organizer
      Mathematical Science of Complex Systems: Physics, Chemistry, Biology, Information and Chaos
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Continuous Measurement and Feedback Control for Enhancement of Quantum Synchronization2020

    • Author(s)
      Yuzuru Kato and Hiroya Nakao
    • Organizer
      Proceedings of the 59th IEEE Conference on Decision and Control (CDC)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ネットワーク結合バネ玉モデルにおける準平衡状態とエネルギー等分配への緩和2020

    • Author(s)
      柳田達雄,小西哲郎
    • Organizer
      日本物理学会 2020年第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 束縛のある鎖状多体系の熱平衡状態:質点の運動エネルギーの分散2020

    • Author(s)
      小西哲郎,柳田達雄
    • Organizer
      日本物理学会 2020年第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] バネで結合した鎖状質点系に現れる振動モードの解析2020

    • Author(s)
      柳田達雄,小西哲郎
    • Organizer
      第65回理論応用力学講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 擬似的に束縛された系の準平衡状態と誘導的緩和現象とゆらぎ2019

    • Author(s)
      柳田達雄,小西哲郎
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Emergence of quasi-equilibrium in Hamiltonian system2019

    • Author(s)
      Tatsuo YANAGITA
    • Organizer
      XXXIX. Dynamics Days Europe, International Conference on Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Koopman eigenfunctionals and reduced description of partial differential equations2019

    • Author(s)
      H. Nakao
    • Organizer
      IPAM workshop on Operator Theoretic Methods in Dynamic Data Analysis and Control (Institute for pure and applied mathematics UCLA)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Slow relaxation to equipartition and emergence of quasi-equilibrium in slow-fast Hamiltonian systems2018

    • Author(s)
      Tatsuo Yanagita and Tetsuro Konishi
    • Organizer
      The 10th Dynamics Days Asia Pacific Huaqiao University Xiamen China
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Emergence of quasi-equilibrium and slow relaxation to equipartition in heterogenous Hamiltonian dynamical systems2018

    • Author(s)
      Tatsuo Yanagita
    • Organizer
      Dynamics Days Europe 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 擬似的に束縛された鎖状系の準平衡状態と誘導的緩和現象2018

    • Author(s)
      柳田達雄・小西哲郎
    • Organizer
      日本物理学会 2018年秋季大会 (同志社大学)
    • Related Report
      2018 Research-status Report
  • [Presentation] 束縛のある鎖状多体系の熱平衡状態:質点の運動エネルギーの期待値と末端部のエネルギー過剰2018

    • Author(s)
      小西哲郎・柳田達雄
    • Organizer
      日本物理学会 2018年秋季大会(同志社大学)
    • Related Report
      2018 Research-status Report
  • [Presentation] 擬似的に束縛された鎖状系の緩和現象2018

    • Author(s)
      柳田達雄・小西哲郎
    • Organizer
      日本物理学会 第73回年次大会(東京理科大学)
    • Related Report
      2018 Research-status Report
  • [Presentation] Phase and amplitude description of complex oscillatory systems2018

    • Author(s)
      H. Nakao
    • Organizer
      Physics of Biological Oscillators: New Insights into Non- Equilibrium and Non-Autonomous Systems(Chicheley Hall Buckinghamshire UK)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Phase-Amplitude Reduction - Synchronization and Control of Collective Oscillations in Networks of Dynamical Systems2018

    • Author(s)
      H. Nakao
    • Organizer
      2018 Gordon Research Conference on Oscillations and Dynamic Instabilities in Chemical Systems(Les Diablerets Conference Center Les Diablerets Switzerland)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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