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Geometry and statistics of homoclinic tangency in random dynamical systems

Research Project

Project/Area Number 19K14575
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 12020:Mathematical analysis-related
Research InstitutionTokai University

Principal Investigator

Nakano Yushi  東海大学, 理学部, 准教授 (50778313)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsホモクリニック接触 / ランダム力学系 / 非双曲力学系 / 転送作用素 / 物理測度 / Markov作用素 / 条件付き極限定理 / 準安定性 / 複合Poisson過程 / Birkhoff非正則集合 / Lyapunov非正則集合 / 逆正弦法則 / Darling-Kac法則 / 収縮性 / 非正則集合 / 擬収縮性 / 漸近周期性 / 創発現象 / カントール集合
Outline of Research at the Start

典型的な力学系は、双曲性と呼ばれる秩序立った幾何構造を持つか、統計的に非常に複雑な振舞いを見せるかであることが知られている。Newhouseによる歴史的発見以来、非双曲力学系研究の中心には、常にホモクリニック接触の幾何があった。その一方でランダム力学系理論では、ランダム特有の幾何的な難しさから、現在でもホモクリニック接触の研究が存在しない。本研究の目標は、quenched型理論と呼ばれる近年のランダム力学系の新展開を背景にして、従来のものより幾何的なランダム力学系理論を展開し、ランダムなホモクリニック接触と、これを端緒としたランダム非双曲力学系理論という自然な研究領域を開拓することである。

Outline of Final Research Achievements

Various properties of dynamical systems with homoclinic tangency, which play a central role in the study of nonhyperbolic dynamical systems, were studied in their counterparts in random dynamical systems, and progress was made that was not expected at the beginning of the study. In particular, it was found that under absolute continuous noise, statistics that differ significantly from those in the noiseless case appear, such as the existence and finiteness of physical measures and the establishment of related limit theorems. We were also able to discover new phenomena related to homoclinic tangency, such as emergent phenomena and the non-existence of Lyapunov exponents.

Academic Significance and Societal Importance of the Research Achievements

ホモクリニック接触を持つ力学系およびそのランダム摂動に関して、研究期間内に多くの興味深い成果が得られた点で学術的意義は高い。一方で、当初の予想に反する結果が得られたことで大きく方針転換せざるを得なくなったため、元の方向性に近い「準安定的Newhouse現象(摂動強度と吸引周期点の個数の関係)」については今後の課題となった。他方で、その中で様々な視点・手法が必要となったため、数多くの研究分野の研究者と共同研究が行われた点では、社会的な意義も十分にあったと思われる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (80 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (27 results) Journal Article (17 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 15 results,  Open Access: 3 results) Presentation (36 results) (of which Int'l Joint Research: 19 results,  Invited: 18 results)

  • [Int'l Joint Research] University of New South Wales/University of Queensland(オーストラリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] CIRM(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Fluminense Federal University/Universidade de Sao Paulo(ブラジル)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Porto(ポルトガル)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 華中科技大学/Xi'an Jiaotong-Liverpool University(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 華中科技大学/Xi'an Jiaotong-Liverpool University(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Lund University(スウェーデン)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Fluminense Federal University/PUC-Rio/University of Sao Paulo(ブラジル)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of New South Wales/University of Queensland(オーストラリア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Porto(ポルトガル)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] 華中科技大学(中国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Lund University(スウェーデン)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Porto(ポルトガル)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Fluminense Federal University(ブラジル)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of New South Wales(オーストラリア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Lund University(スウェーデン)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Fluminense Federal University(ブラジル)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Xi'an Jiaotong-Liverpool University/華中科技大学(中国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of New South Wales(オーストラリア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Maryland(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Lund University(スウェーデン)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Fluminense Federal University(ブラジル)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Xi'an Jiaotong-Liverpool University/華中科技大学(中国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of New South Wales(オーストラリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Maryland(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] (ランダム)力学系におけるPomeau-Manneville型間欠性2024

    • Author(s)
      中野雄史
    • Journal Title

      (ランダム力学系・非自励力学系研究の展望:理論と応用)数理解析研究所講究録

      Volume: 2270 Pages: 78-91

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] A spectral approach to quenched linear and higher-order response for partially hyperbolic dynamics2023

    • Author(s)
      CRIMMINS HARRY、NAKANO YUSHI
    • Journal Title

      Ergodic Theory and Dynamical Systems

      Volume: 44 Issue: 4 Pages: 1026-1057

    • DOI

      10.1017/etds.2023.41

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Historic and physical wandering domains for wild blender-horseshoes2023

    • Author(s)
      Kiriki Shin、Nakano Yushi、Soma Teruhiko
    • Journal Title

      Nonlinearity

      Volume: 36 Issue: 8 Pages: 4007-4033

    • DOI

      10.1088/1361-6544/acda74

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observable Lyapunov irregular sets for planar piecewise expanding maps2023

    • Author(s)
      Y. Nakano Yushi, T. Soma, K. Yamamoto
    • Journal Title

      Discrete and Continuous Dynamical Systems

      Volume: 43 Issue: 7 Pages: 2737-2755

    • DOI

      10.3934/dcds.2023027

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quenched limit theorems for random U(1) extensions of expanding maps2023

    • Author(s)
      Chung Yong Moo; Nakano Yushi; Wittsten Jens
    • Journal Title

      Discrete and Continuous Dynamical Systems

      Volume: 43 Issue: 1 Pages: 338-377

    • DOI

      10.3934/dcds.2022151

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Arcsine law for random dynamics with a core2023

    • Author(s)
      Nakamura Fumihiko、Nakano Yushi、Toyokawa Hisayoshi、Yano Kouji
    • Journal Title

      Nonlinearity

      Volume: 36 Issue: 3 Pages: 1491-1509

    • DOI

      10.1088/1361-6544/acb398

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] (ランダム)力学系におけるLyapunov 非正則集合の観測可能性2022

    • Author(s)
      中野雄史
    • Journal Title

      (ランダム力学系および多価写像力学系理論の総合的研究) 数理解析研究所講究録

      Volume: 2217

    • Related Report
      2022 Research-status Report
    • Open Access
  • [Journal Article] Abundance of Observable Lyapunov Irregular Sets2022

    • Author(s)
      Kiriki Shin、Li Xiaolong、Nakano Yushi、Soma Teruhiko
    • Journal Title

      Communications in Mathematical Physics

      Volume: 391 Issue: 3 Pages: 1241-1269

    • DOI

      10.1007/s00220-022-04337-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Topological entropy and Hausdorff dimension of irregular sets for non-hyperbolic dynamical systems2022

    • Author(s)
      Barrientos Pablo G.、Nakano Yushi、Raibekas Artem、Roldan Mario
    • Journal Title

      Dynamical Systems

      Volume: - Issue: 2 Pages: 1-30

    • DOI

      10.1080/14689367.2022.2031890

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Emergence via non-existence of averages2022

    • Author(s)
      Kiriki Shin、Nakano Yushi、Soma Teruhiko
    • Journal Title

      Advances in Mathematics

      Volume: 400 Pages: 108254-108254

    • DOI

      10.1016/j.aim.2022.108254

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Lyapunov exponents for random maps2022

    • Author(s)
      Nakamura Fumihiko、Nakano Yushi、Toyokawa Hisayoshi
    • Journal Title

      Discrete & Continuous Dynamical Systems - B

      Volume: 0 Issue: 12 Pages: 0-0

    • DOI

      10.3934/dcdsb.2022058

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Highly irregular orbits for subshifts of finite type: large intersections and emergence2021

    • Author(s)
      Nakano Yushi、Zelerowicz Agnieszka
    • Journal Title

      Nonlinearity

      Volume: 34 Issue: 11 Pages: 7609-7632

    • DOI

      10.1088/1361-6544/ac24e1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mixing and observation for Markov operator cocycles*2021

    • Author(s)
      Nakamura Fumihiko、Nakano Yushi、Toyokawa Hisayoshi
    • Journal Title

      Nonlinearity

      Volume: 35 Issue: 1 Pages: 66-83

    • DOI

      10.1088/1361-6544/ac355f

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Irregular sets for piecewise monotonic maps2021

    • Author(s)
      Yushi Nakano, Kenichiro Yamamoto
    • Journal Title

      Tokyo Journal of Mathematics

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spectra of expanding maps on Besov spaces2019

    • Author(s)
      Nakano Yushi、Sakamoto Shota
    • Journal Title

      Discrete & Continuous Dynamical Systems - A

      Volume: 39 Issue: 4 Pages: 1779-1797

    • DOI

      10.3934/dcds.2019077

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Existence and non-existence of length averages for foliations2019

    • Author(s)
      Nakano Yushi、Yokoyama Tomoo
    • Journal Title

      Commun. Math. Phys.

      Volume: 372 Issue: 2 Pages: 367-383

    • DOI

      10.1007/s00220-019-03490-9

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Historic behavior in nonhyperbolic homoclinic classes2019

    • Author(s)
      Barrientos Pablo G.、Kiriki Shin、Nakano Yushi、Raibekas Artem、Soma Teruhiko
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 148 Issue: 3 Pages: 1195-1206

    • DOI

      10.1090/proc/14809

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Quasi-limit theorems in open dynamical systems2024

    • Author(s)
      中野雄史
    • Organizer
      2023年度冬の力学系研究集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 曲面上の微分同相写像のホモクリニック分岐によるLyapunov指数の非存在2024

    • Author(s)
      中野雄史
    • Organizer
      静岡複素解析幾何セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Metastable limit theorems in chaotic dynamical systems near statistical bifurcation points2024

    • Author(s)
      Yushi Nakano
    • Organizer
      Seminar on Probability and Mathematical Statistics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Arcsine law for random dynamics with a core2024

    • Author(s)
      Yushi Nakano
    • Organizer
      Tateyama Dynamics Workshop 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Existence and non-existence of Lyapunov exponents for (random) non-hyperbolic dynamical systems2023

    • Author(s)
      Yushi Nakano
    • Organizer
      Probabilistic methods in dynamics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Limit theorems for (random) non-hyperbolic dynamics2023

    • Author(s)
      Yushi Nakano
    • Organizer
      43rd Conference on Stochastic Processes and their Applications
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Arcsine law for random dynamics with a core2023

    • Author(s)
      Yushi Nakano
    • Organizer
      10th International Congress on Industrial and Applied Mathematics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Arcsine law for random dynamics with a core2023

    • Author(s)
      Yushi Nakano
    • Organizer
      Interplay between non-stationary physics and infinite ergodic theory
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] xistence and non-existence of Lyapunov exponents for (random) non-hyperbolic dynamical systems2023

    • Author(s)
      Yushi Nakano
    • Organizer
      KiPAS Dynamics Days 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Irregular behavior in dynamics, Part 12023

    • Author(s)
      Yushi Nakano
    • Organizer
      Dynamical Systems in Porto
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Irregular behavior in dynamics, Part 22023

    • Author(s)
      Yushi Nakano
    • Organizer
      Dynamical Systems in Porto
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Toward a study of metastability in dynamical systems theory2023

    • Author(s)
      中野雄史
    • Organizer
      エルゴード理論研究集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Robustness of observable irregular behavior for non-amenable group actions and codimesion-one foliations in 3-manifolds2023

    • Author(s)
      中野雄史
    • Organizer
      エルゴード理論研究集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Existence and non-existence of Lyapunov exponents for (random) non-hyperbolic dynamical systems2023

    • Author(s)
      Yushi Nakano
    • Organizer
      Ergodic Theory, Dynamical Systems, and Climate Sciences
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Masur-Veech測度に関するKontsevich-Zorichコサイクルのエルゴード理論2023

    • Author(s)
      中野雄史
    • Organizer
      研究集会「タイヒミュラー空間の力学系入門」
    • Related Report
      2022 Research-status Report
  • [Presentation] 平行移動流と区間交換変換のエルゴード理論2023

    • Author(s)
      中野雄史
    • Organizer
      研究集会「タイヒミュラー空間の力学系入門」
    • Related Report
      2022 Research-status Report
  • [Presentation] Lyapunov指数の基礎 (1):Oseledetsエルゴード定理2022

    • Author(s)
      中野雄史
    • Organizer
      ミニワークショップ「複素力学系入門」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Lyapunov指数の基礎 (2):不変原理2022

    • Author(s)
      中野雄史
    • Organizer
      ミニワークショップ「複素力学系入門」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Lyapunov指数の基礎 (3):Zorich-Kontsevich予想2022

    • Author(s)
      中野雄史
    • Organizer
      ミニワークショップ「複素力学系入門」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] A review on intermittency for Pomeau-Manneville maps and random dynamical systems2022

    • Author(s)
      中野雄史
    • Organizer
      RIMS 共同研究集会「ランダム力学系・非自励力学系研究の展望:理論と応用」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Finitude of physical measures for random maps2022

    • Author(s)
      Yushi Nakano
    • Organizer
      Thermodynamic Formalism for Random Dynamical Systems, MATRIX
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ランダムな物理測度の有限性とMarkov作用素2022

    • Author(s)
      中野雄史
    • Organizer
      冬の力学系研究集会
    • Related Report
      2021 Research-status Report
  • [Presentation] (ランダム)力学系におけるLyapunov非正則集合の観測可能性2021

    • Author(s)
      中野雄史
    • Organizer
      ランダム力学系および多価写像力学系理論の総合的研究
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Finitude of random physical measures via Markov operators2021

    • Author(s)
      中野雄史
    • Organizer
      エルゴード理論とその周辺
    • Related Report
      2021 Research-status Report
  • [Presentation] A survey on noncommutative entropy of Exel-Laca algebras2021

    • Author(s)
      中野雄史
    • Organizer
      作用素環と力学系
    • Related Report
      2021 Research-status Report
  • [Presentation] Irregular sets with high emergence2020

    • Author(s)
      Yushi Nakano
    • Organizer
      1st workshop on wild dynamical systems
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Large intersection classes for pointwise emergence2020

    • Author(s)
      Yushi Nakano
    • Organizer
      RIMS 研究集会「数理科学の諸問題と力学系理論の新展開」
    • Related Report
      2020 Research-status Report
  • [Presentation] Large intersection classes for pointwise emergence2020

    • Author(s)
      Yushi Nakano
    • Organizer
      Zoominar in Dynamical Systems at CMUP
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quenched metastability for random expanding maps2020

    • Author(s)
      中野雄史
    • Organizer
      2019年度 冬の力学系研究集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Quenched exponential mixing for random expanding semiflows2019

    • Author(s)
      Yushi Nakano
    • Organizer
      Research on the Theory of Random Dynamical Systems and Fractal Geometry
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Emergence via non-existence of averages2019

    • Author(s)
      Yushi Nakano
    • Organizer
      Seminar in dynamical systems (Lund University)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quenched exponential mixing for random expanding semiflows2019

    • Author(s)
      Yushi Nakano
    • Organizer
      華中科技大学 学術講演
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quenched limit theorems for random U(1) extensions of expanding maps2019

    • Author(s)
      Yushi Nakano
    • Organizer
      Keio Dynamics Day - spectral approaches in dynamics -
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Emergence via non-existence of averages2019

    • Author(s)
      Yushi Nakano
    • Organizer
      Chubu Workshop on Dynamical Systems and Chaos
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 時間平均の非存在による創発現象2019

    • Author(s)
      中野雄史
    • Organizer
      エルゴード理論とその周辺
    • Related Report
      2019 Research-status Report
  • [Presentation] Emergence via non-existence of averages2019

    • Author(s)
      Yushi Nakano
    • Organizer
      Thermodynamic Formalism: Dynamical Systems, Statistical Properties and their Applications
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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