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Chaos in physical phenomena

Research Project

Project/Area Number 61540267
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 物性一般(含極低温・固体物性に対する理論)
Research InstitutionWaseda University

Principal Investigator

SAITO N  School of Sci. and Eng. Waseda University, 理工学部, 教授 (20063125)

Co-Investigator(Kenkyū-buntansha) ASAI H  School of Sci. and Eng. Waseda University, 理工学部, 教授 (70063584)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥900,000 (Direct Cost: ¥900,000)
Keywordschaotic dynamics / linear response theory / esgsdic heosem / guantum chaos / action integral / membrane potential / convergence in law / 断熱感受率 / ウィグナー分布 / ランダムマトリックス / 生態系 / 不動点の分岐 / ランダム行列 / ストレンジ・アトラクタ / Grassberger-Procaccia法
Research Abstract

1. Chaos for the foundation of statistical mechanics.
According to the recent studies of the chaos in hamiltonian systems, the distribution function does not converge in a pointwise manner for t . We thus introduce the concept of convergence in law employed in the theory of probability which claims that the random variables described by the distribution function obey the different probability law from the original one in the limit t . By extending this concept for finite t, we can reformulate the conventional linear response theory. Thus we can remove the several deficiencies and give the foundation of this theory.
We further show that if the limiting distribution function is constant, the system is ergodic. this is an approach to ergodic theory from chaotic dynamics.
2. Quantum Chaos
The origin and nature of quantum chaos is shown to arise from the action integral. This enables us to make a correspondence with the classical one and to relate the behaviors of the energy level and wave functions.
The studies on the energy level spacing, the relation with random matrix and Husiml distribution function are also carried out in connection with quantum chaos.
3. Chaos in biological systems
The chaotic phenomenon observed in biological systems are important for the behaviors of living organisms, and brain research. By analysing the membrane potential of Paramecium the presence of low dimensional chaos is suggested.

Report

(3 results)
  • 1988 Final Research Report Summary
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] N.Saito.: J,phys,Soc,Jpn. 58. 425-432 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] N.Saito.: J.phys,Soc,Jpn.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.Shudo.: J.phys Soc,Jpn. 56. 2641-2652 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.Shudo.: phys,Rev,A. 39. 282-295 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.Shudo.: Phys,Lett.A. 130. 338-343 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Takahashi.: J.phys,Soc,Jpn. 55. 762-779 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Takahashi.: J.phys,Soc,Jpn. 55. 1433-1457 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Takahashi.: J.phys,Soc,Jpn. 57. 442-452 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] N.Saito.: Supkl,Prog,then,phys. 投稿中.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Nagai.: J.phys,Soc,Jpn. 57. 3305-3308 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] N.Saito.: "On the bifurcation of the periodic orbits in certain Hamiltonian systems" J.Phys.Soc.Jpn. 58. 425-432 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] N.Saito.: "Linear response theory reformulated from chaotic dynamics" J.Phys.Soc.Jpn. submitted.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.Shudo.: "Level spacing distribution and avoided crossing in quantum mechanics" J.Phys.Soc.Jpn. 56. 2641-2652 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.Shudo.: "Regularity versus randomness in matrix element distribution for quantum non-intergrable hamiltonian systems" Phys.Rev a. 39. 282 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.Shudo.: "Canonical correlation of a non-integrable quantum system" Phys.Lett A. 130. 338-343 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Takahashi.: "Wigner and Husimi functions in quantum mechanics" J.Phys.Soc.Jpn. 55. 762-779 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Takahashi.: "Chaos and time development of quantum wave packet in Husimi representation" J.Phys.Soc.Jpn. 55. 1433-1457 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Takahashi.: "Time development of distribution function in coarse-grained mechanics" J.Phys.Soc.Jpn. 57. 442-452 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] N.Saito.: "On the origin and nature of quantum chaos" Supple.Prog.Theor.Phys. submitted.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Nagai.: "Existence of low dimensional chaos in Paramecium membrane potential suggested by the correlation integral method" J.Phys.Soc.Jpn. 57. 3305-3308 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 斎藤 信彦: 物性研究. 48. 353-358 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 斎藤 信彦: 物性研究. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] A.Shudo,N.Saito: J.Phys.Soc.Jpn. 56. 2641-2652 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 永井喜則,原律雄,土屋高,斎藤信孝: 物性研究. 48. 322-325 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] T.Matsushita,A.Shudo: Phys.Rew.Lett. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] A.Shudo: J.Phys.Soc.Japan.

    • Related Report
      1986 Annual Research Report
  • [Publications] 斎藤信彦: 物性研究.

    • Related Report
      1986 Annual Research Report
  • [Publications] 永井喜則: 物性研究.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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