Abstract : We investigate numerically the stable and unstable manifolds of the hyperbolic manifolds of the phase space related to the resonances of quasi-integrable systems in the regime of validity of the Nekhoroshev and KAM theorems. Using a model of weakly interacting resonances we explain the qualitative features of these manifolds characterized by peculiar 'flower--like' structures. We detect different transitions in the topology of these manifolds related to the local rational approximations of the frequencies. We find numerically a correlation among these transitions and the speed of Arnold diffusion.
https://hal-insu.archives-ouvertes.fr/insu-00186175
Contributor : Elena Lega <>
Submitted on : Tuesday, January 27, 2009 - 10:07:56 AM Last modification on : Thursday, November 26, 2020 - 9:34:32 AM Long-term archiving on: : Wednesday, September 22, 2010 - 11:46:12 AM
Massimiliano Guzzo, Elena Lega, Claude Froeschle. A numerical study of the topology of normally hyperbolic invariant manifolds supporting Arnold diffusion in quasi--integrable systems.. 2009. ⟨insu-00186175v2⟩