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Elucidation of spatiotemporal synchronization phenomena by construction of phase reduction theory for traveling and oscillating solutions

Research Project

Project/Area Number 16K17769
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Mathematical physics/Fundamental condensed matter physics
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

KAWAMURA Yoji  国立研究開発法人海洋研究開発機構, 付加価値情報創生部門(数理科学・先端技術研究開発センター), グループリーダー代理 (90455494)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords数理科学 / 同期現象 / 振動現象 / 位相縮約 / 位相記述 / 振動対流 / 集団振動 / 進行振動解 / 位相縮約理論 / 偏微分方程式 / 熱対流 / 電気化学振動子 / 位相振動子 / 同相同期 / 逆相同期 / 偏微分代数方程式 / 非圧縮性 / 流体方程式 / 進行振動対流 / リミット・トーラス解 / 繊毛 / メタクロナル波 / ゾウリムシ / 相互同期 / 最適化 / 鞭毛 / 反応拡散系 / ネットワーク / 非線形科学 / 集団位相 / 同期理論 / 最適化手法 / 数理物理 / 非線形動力学 / 位相縮約法
Outline of Final Research Achievements

We formulated a theory for the phase reduction of traveling and oscillating solutions to partial differential equations. As a typical example, we considered traveling and oscillating thermal convection in a two-dimensional incompressible Navier-Stokes flow system. First, we derived phase sensitivity functions that quantify the spatiotemporal phase responses of the thermal convection under weak perturbations applied at each spatial point and at each time. Here, we demonstrated that the phase sensitivity functions of fluid velocity fields are divergence-free for incompressible Navier-Stokes flow systems. Further, we analyzed the spatiotemporal phase synchronization between a pair of thermally coupled systems exhibiting the thermal convection. Finally, the phase reduction theory enabled us to prove the global stability of the spatial and temporal in-phase synchronized state under the weak thermal coupling.

Academic Significance and Societal Importance of the Research Achievements

大気大循環の模型実験系として知られる回転水槽実験系は進行振動対流パターンを示す。近年、一対の回転水槽を熱的に結合させた系において、一対の進行振動対流の間の空間的・時間的な位相同期現象が観察されている。回転水槽実験系の進行振動対流(進行振動解)は、「空間に関する連続並進対称性の自発的な破れ」と「時間に関する連続並進対称性の自発的な破れ」という2つの位相を持つリミット・トーラス解である。本研究成果は、回転水槽実験系の進行振動対流に対する位相縮約法を定式化し、結合回転水槽における進行振動対流の空間的・時間的な位相同期ダイナミクスを位相縮約により解析するための基礎となる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (52 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 8 results,  Acknowledgement Compliant: 2 results) Presentation (19 results) (of which Invited: 4 results) Book (1 results) Remarks (20 results)

  • [Int'l Joint Research] セントルイス大学(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Anti-phase collective synchronization with intrinsic in-phase coupling of two groups of electrochemical oscillators2019

    • Author(s)
      Michael Sebek, Yoji Kawamura, Ashley M. Nott, and Istvan Z. Kiss
    • Journal Title

      Philosophical Transactions of the Royal Society A

      Volume: 377 Issue: 2160 Pages: 377-377

    • DOI

      10.1098/rsta.2019.0095

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Phase reduction of limit-torus solutions to partial differential algebraic equations2019

    • Author(s)
      Yoji Kawamura
    • Journal Title

      Physical Review Research

      Volume: 1 Issue: 3 Pages: 1-23

    • DOI

      10.1103/physrevresearch.1.033130

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phase reduction approach to spatiotemporal synchronization of traveling and oscillating convection2019

    • Author(s)
      Yoji Kawamura
    • Journal Title

      IEICE Technical Report

      Volume: 119 Pages: 1-4

    • NAID

      40022094232

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Phase reduction approach to hydrodynamic synchronization of beating flagella2018

    • Author(s)
      Yoji Kawamura and Remi Tsubaki
    • Journal Title

      IEICE Technical Report

      Volume: 118 Pages: 41-44

    • NAID

      40021586633

    • Related Report
      2018 Research-status Report
  • [Journal Article] Phase reduction approach to elastohydrodynamic synchronization of beating flagella2018

    • Author(s)
      Yoji Kawamura and Remi Tsubaki
    • Journal Title

      Physical Review E

      Volume: 97 Issue: 2 Pages: 1-1

    • DOI

      10.1103/physreve.97.022212

    • Related Report
      2017 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
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optimizing stability of mutual synchronization between a pair of limit-cycle oscillators with weak cross coupling2017

    • Author(s)
      Shirasaka Sho、Watanabe Nobuhiro、Kawamura Yoji、Nakao Hiroya
    • Journal Title

      Physical Review E

      Volume: 96 Issue: 1

    • DOI

      10.1103/physreve.96.012223

    • NAID

      120006582613

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimizing mutual synchronization of rhythmic spatiotemporal patterns in reaction-diffusion systems2017

    • Author(s)
      Kawamura Yoji、Shirasaka Sho、Yanagita Tatsuo、Nakao Hiroya
    • Journal Title

      Physical Review E

      Volume: 96 Issue: 1 Pages: 012224-012236

    • DOI

      10.1103/physreve.96.012224

    • NAID

      120006582616

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mutual synchronization of oscillatory convection and its optimization2017

    • Author(s)
      Yoji Kawamura and Hiroya Nakao
    • Journal Title

      IEICE Technical Report

      Volume: 117 Pages: 29-34

    • NAID

      40021402758

    • Related Report
      2017 Research-status Report
  • [Journal Article] Collective phase reduction of globally coupled noisy dynamical elements2017

    • Author(s)
      Yoji Kawamura
    • Journal Title

      Physical Review E

      Volume: 95 Issue: 3

    • DOI

      10.1103/physreve.95.032225

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Optimization of noise-induced synchronization of oscillator networks2016

    • Author(s)
      Yoji Kawamura and Hiroya Nakao
    • Journal Title

      Physical Review E

      Volume: 94 Issue: 3

    • DOI

      10.1103/physreve.94.032201

    • NAID

      120006582541

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 非局所結合位相振動子系における安定な平面波2020

    • Author(s)
      河村洋史, Ettore Barbieri
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 偏微分代数方程式におけるリミット・トーラス解の位相縮約法2019

    • Author(s)
      河村洋史
    • Organizer
      RIMS共同研究(公開型)「力学系:新たな理論と応用に向けて」
    • Related Report
      2019 Annual Research Report
  • [Presentation] 偏微分方程式のリミット・トーラス解に対する位相縮約法2019

    • Author(s)
      河村洋史
    • Organizer
      日本応用数理学会 2019年度年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 非圧縮性流体方程式における進行振動対流解の位相縮約法2019

    • Author(s)
      河村洋史
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 非圧縮性流体方程式における進行振動対流解の位相記述法2019

    • Author(s)
      河村洋史
    • Organizer
      日本流体力学会 年会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 進行振動対流の時空間的な同期現象に対する位相縮約によるアプローチ2019

    • Author(s)
      河村洋史
    • Organizer
      2019年度第3回複雑コミュニケーションサイエンス(CCS)研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 進行振動対流の時空間的な同期現象に対する位相縮約によるアプローチ2019

    • Author(s)
      河村洋史
    • Organizer
      京都大学 非線形科学とその周辺セミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 鞭毛の同期現象に対する位相縮約によるアプローチ2019

    • Author(s)
      河村洋史
    • Organizer
      研究集会「大自由度力学系のデータ駆動型縮約モデリング手法の確立とバイタルサインへの適用」
    • Related Report
      2018 Research-status Report
  • [Presentation] 鞭毛の同期現象に対する位相縮約によるアプローチ2019

    • Author(s)
      河村洋史
    • Organizer
      千葉大学 生命情報物理学研究室セミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 鞭毛の同期現象に対する位相縮約によるアプローチ2019

    • Author(s)
      河村洋史
    • Organizer
      兵庫県立大学大学院シミュレーション学研究科セミナー
    • Related Report
      2018 Research-status Report
  • [Presentation] 鞭毛の流体力学的同期現象に対する位相縮約によるアプローチ2018

    • Author(s)
      河村洋史, 椿玲未
    • Organizer
      2018年度第1回複雑コミュニケーションサイエンス(CCS)研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 鞭毛の流体力学的同期現象に対する位相縮約によるアプローチ2018

    • Author(s)
      河村洋史, 椿玲未
    • Organizer
      2018年度RIMS研究集会「生物流体力学の展望」
    • Related Report
      2018 Research-status Report
  • [Presentation] 鞭毛の同期現象に対する位相縮約によるアプローチ2018

    • Author(s)
      河村洋史
    • Organizer
      奈良女子大学 非線形・情報統計力学研究室セミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 振動対流の相互同期の最適化2018

    • Author(s)
      河村洋史, 中尾裕也
    • Organizer
      日本物理学会 第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 振動対流の同期現象とその最適化: 位相縮約によるアプローチ2018

    • Author(s)
      河村洋史
    • Organizer
      日本応用数理学会 2018年研究部会連合発表会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 鞭毛の同期現象に対する位相記述によるアプローチ2017

    • Author(s)
      河村洋史, 椿玲未
    • Organizer
      日本流体力学会 年会2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 鞭毛の同期現象に対する位相縮約によるアプローチ2017

    • Author(s)
      河村洋史, 椿玲未
    • Organizer
      日本応用数理学会 2017年度年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 鞭毛の振動運動の位相縮約とその応用2017

    • Author(s)
      河村洋史, 椿玲未
    • Organizer
      日本物理学会 2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 振動対流の相互同期とその最適化2017

    • Author(s)
      河村洋史, 中尾裕也
    • Organizer
      2017年度第3回複雑コミュニケーションサイエンス研究会
    • Related Report
      2017 Research-status Report
  • [Book] 同期現象の科学2017

    • Author(s)
      蔵本由紀・河村洋史
    • Total Pages
      353
    • Publisher
      京都大学学術出版会
    • Related Report
      2016 Research-status Report
  • [Remarks] JAMSTEC Researchers Database (Yoji Kawamura)

    • URL

      http://www.jamstec.go.jp/souran/html/Yoji_Kawamura_ea617-j.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] MAT TOOLBOX

    • URL

      http://www.jamstec.go.jp/mat/j/pamphlet/

    • Related Report
      2019 Annual Research Report
  • [Remarks] figshare (Phil. Trans. R. Soc. A)

    • URL

      https://figshare.com/s/aeffaa13b1d8524e0c47

    • Related Report
      2019 Annual Research Report
  • [Remarks] Twitter (Phys. Rev. Research)

    • URL

      https://twitter.com/PhysRevResearch/status/1199520725213859840

    • Related Report
      2019 Annual Research Report
  • [Remarks] Twitter (Phys. Rev. Research)

    • URL

      https://twitter.com/PhysRevResearch/status/1202374536517300224

    • Related Report
      2019 Annual Research Report
  • [Remarks] Publons (Yoji Kawamura)

    • URL

      https://publons.com/researcher/2541059/yoji-kawamura/

    • Related Report
      2018 Research-status Report
  • [Remarks] Microsoft Academic (Yoji Kawamura)

    • URL

      https://academic.microsoft.com/#/profile/YojiKawamura

    • Related Report
      2018 Research-status Report
  • [Remarks] arXiv (Yoji Kawamura)

    • URL

      https://arxiv.org/a/0000-0002-5931-5512.html

    • Related Report
      2018 Research-status Report
  • [Remarks] CiNii (Yoji Kawamura)

    • URL

      https://ci.nii.ac.jp/nrid/9000003435761

    • Related Report
      2018 Research-status Report
  • [Remarks] J-GLOBAL (Yoji Kawamura)

    • URL

      https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200901068694773038

    • Related Report
      2018 Research-status Report
  • [Remarks] My JpGU (Yoji Kawamura)

    • URL

      https://mypage.jpgu.org/profile/024848

    • Related Report
      2017 Research-status Report
  • [Remarks] ResearcherID (Yoji Kawamura)

    • URL

      http://www.researcherid.com/rid/E-3475-2014

    • Related Report
      2017 Research-status Report
  • [Remarks] Scopus Author ID (Yoji Kawamura)

    • URL

      https://www.scopus.com/authid/detail.uri?authorId=7401574852

    • Related Report
      2017 Research-status Report
  • [Remarks] Mendeley profile (Yoji Kawamura)

    • URL

      https://www.mendeley.com/profiles/yoji-kawamura/

    • Related Report
      2017 Research-status Report
  • [Remarks] Google Scholar Citations (Yoji Kawamura)

    • URL

      https://scholar.google.com/citations?user=GAZsla0AAAAJ

    • Related Report
      2017 Research-status Report
  • [Remarks] JAMSTEC MAT (Yoji Kawamura)

    • URL

      http://www.jamstec.go.jp/mat/j/members/yoji_kawamura/

    • Related Report
      2016 Research-status Report
  • [Remarks] researchmap (Yoji Kawamura)

    • URL

      http://researchmap.jp/read0201481/

    • Related Report
      2016 Research-status Report
  • [Remarks] ResearchGate (Yoji Kawamura)

    • URL

      https://www.researchgate.net/profile/Yoji_Kawamura

    • Related Report
      2016 Research-status Report
  • [Remarks] ORCID ID (Yoji Kawamura)

    • URL

      http://orcid.org/0000-0002-5931-5512

    • Related Report
      2016 Research-status Report
  • [Remarks] 『同期現象の科学』参考文献

    • URL

      https://sites.google.com/site/scienceofsynchronization/

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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