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On the persistence of lower-dimensional invariant hyperbolic tori for smooth Hamiltonian systems

Debin Huang and Zengrong Liu

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Recommended by V Baladi

In this paper, sufficiently smooth Hamiltonian systems with perturbations are considered. By combining a smooth version of the Kolmogorov-Arnold-Moser theorem and the theory of normally hyperbolic invariant manifolds, we show that under the conditions of nonresonance and nondegeneracy, most hyperbolic invariant tori and their stable and unstable manifolds survive smoothly under sufficiently smooth autonomous perturbation. This result can be generalized directly to the case of time-dependent quasi-periodic perturbations. Finally, an example from geometrical optics is used to illustrate our method.


PACS

45.20.Jj Lagrangian and Hamiltonian mechanics

02.40.Sf Manifolds and cell complexes

MSC

37D10 Invariant manifold theory

70H08 Nearly integrable Hamiltonian systems, KAM theory

37K55 Perturbations, KAM for infinite-dimensional systems

70H05 Hamilton's equations

Subjects

Mathematical physics

Dates

Issue 1 (January 2000)

Received 4 January 1999, in final form 29 September 1999



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