Vendredi 23 Octobre 2015
11h : Luigi CHIERCHIA :
On the measure of Arnold diffusion orbits in 3D
Abstract: We will discuss the following result [joint work with L. Biasco]: For generic, analytic, nearly-integrable mechanical systems with 3 degrees of freedom, the set of points (in bounded phase space regions) which may give rise to Arnold diffusion is exponentially small with the (inverse of the) perturbation parameter.