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2005 Fiscal Year Final Research Report Summary

CRITERIA FOR INTEGRABILITY OF HAMILTONIAN SYSTEMS AND LIST OF INTEGRABLE SYSTEMS BASED ON SINGULARITY ANALYSIS

Research Project

Project/Area Number 15540224
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Global analysis
Research InstitutionNATIONAL ASTRONOMICAL OBSERVATORY (NAO)

Principal Investigator

YOSHIDA Haruo  NAO, DIVISION OF THEORETICAL ASTRONOMY, PROFESSOR, 理論研究部, 教授 (70220663)

Co-Investigator(Kenkyū-buntansha) TANIKAWA Kiyotaka  NAO, DIVISION OF THEORETICAL ASTRONOMY, ASSOCIATE PROFESSOR, 理論研究部, 助教授 (80125210)
NAKAI Hiroshi  NAO, PUBLIC RELATIONS CENTERS, ASSOCIATE PROFESSOR, 天文情報センター, 助教授 (60155653)
Project Period (FY) 2003 – 2005
KeywordsHamiltonian dynamical system / Integrability / Criteria
Research Abstract

The most important result obtained during the period, 2000-2002, is that the complete list of all integrable homogeneous polynomial potentials was obtained which has polynomial first integral of order four or less with respect to momenta. At the end of 19th century, Darboux obtained the condition such that there exist a first integral that is quadratic or less with respect to momenta. Three special potentials with fourth order integrals were found around 1980. The present result confirms that there are no more integrable potentials rigorously.
When the homogenous potential is cubic or quartic, there exists am example which has genuinely fourth order polynomial integral. However, when the degree of the potential is 5 or more, it is shown that there cannot exist genuinely fourth order polynomial integral. In order to prove this non-existence theorem, it is crucial to use the resultant which tells us when two algebraic equations have a common root.

  • Research Products

    (8 results)

All 2005 2004 2003

All Journal Article (6 results) Book (2 results)

  • [Journal Article] A super-integrable discretization of the Calogero model2005

    • Author(s)
      H.Ujino, L.Vinet, H.Yoshida
    • Journal Title

      Journal of Mathematical Physics 46

      Pages: 062705

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Generalized dynamical ordering and topological entropy in the Henon map2005

    • Author(s)
      Y.Yamaguchi, K.Tanikawa
    • Journal Title

      Progress of Theoretical Physics 114

      Pages: 763-791

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] On the totality of the eclipse in AD628 in the Nihongi2004

    • Author(s)
      K.Tanikawa, M.Soma
    • Journal Title

      Publications of the Astronomical Society of Japan 56

      Pages: 215-224

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] On the symmetric collinear four-body problem2004

    • Author(s)
      M.Sekiguchi, K.Tanikawa
    • Journal Title

      Publications of the Astronomical Society of Japan 56

      Pages: 235-251

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Non-Birkhoff periodic orbits with 2n-turning points in the standard2003

    • Author(s)
      K.Tanikawa, Y.Yamaguchi
    • Journal Title

      Progress of Theoretical Physics 109

      Pages: 187-202

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Non-Birkhoff periodic orbits with 2n-turning points in the standard map2003

    • Author(s)
      K.Tanikawa, Y.Yamaguchi
    • Journal Title

      Progress of Theoretical Physics 109

      Pages: 187-202

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 力学の解ける問題と解けない問題2005

    • Author(s)
      吉田春夫
    • Total Pages
      86
    • Publisher
      岩波書店
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Rikigaku no tokeru mondai to tokenai mondai (in Japanese)2005

    • Author(s)
      H.Yoshida
    • Total Pages
      86
    • Publisher
      Iwanami publisher
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2007-12-13  

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