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Approximations of higher order resonances with an application to Contopoulos' model problem

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Asymptotic Analysis

Part of the book series: Lecture Notes in Mathematics ((LNM,volume 711))

Abstract

Higher order resonances in two degrees of freedom Hamiltonian systems are studied by using Birkhoff normalization. The normal forms can be used as a starting point to develop a theory of asymptotic approximations on the natural time-scale of the resonances. The asymptotic expressions are used to obtain a geometric picture of the flow in 4-space. An application of the theory is found in the model problem of Contopoulos for the Hamiltonian H=1/2(x2+y2)+1/2(ω 21 x2 22 y2)−εxy2. A comparison with numerical results obtained earlier yields excellent agreement and we put Contopoulos' formal «third» integral in a new perspective.

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Ferdinand Verhulst

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© 1979 Springer-Verlag

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Sanders, J.A., Verhulst, F. (1979). Approximations of higher order resonances with an application to Contopoulos' model problem. In: Verhulst, F. (eds) Asymptotic Analysis. Lecture Notes in Mathematics, vol 711. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0062955

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  • DOI: https://doi.org/10.1007/BFb0062955

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-09245-2

  • Online ISBN: 978-3-540-35332-4

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