# Meeting Details

Title: Arnold diffusion in a chain of coupled pendula Center for Dynamics and Geometry Seminars Mark Levi, PSU In this joint work with Vadim Kaloshin and Maria Saprykina we show how Arnold diffusion can manifest itself in strange dynamics of a chain of weakly coupled pendula. The energy can diffuse from one pendulum to its neighbor, following any prescribed itinerary. These deterministically random" motions coexist with KAM tori, which occupy most of the system's phase space.