Diffusion time and splitting of separatrices for nearly integrable isochronous Hamiltonian systems
Massimiliano Berti, Philippe Bolle
Abstract
We consider the problem of Arnold's diffusion for nearly integrable isochronous Hamiltonian systems. We prove a shadowing theorem which improves the known estimates for the diffusion time. We also justify for three time scales systems that the splitting of the separatrices is correctly predicted by the Poincare'-Melnikov function.
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