Abstract
Particles escape from the vicinity of invariant tori is macroscopically modeled by a nonuniform diffusive process. The space dependence of transport coefficients is fixed by using perturbation theory scalings. This leads to universal predictions for the escape rates that are then observed in numerical simulations
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Morbidelli, A., Vergassola, M. Escape rates in hamiltonian systems. J Stat Phys 89, 549–560 (1997). https://doi.org/10.1007/BF02765535
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DOI: https://doi.org/10.1007/BF02765535