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Nekhoroshev's estimates for quasi-periodic time-dependent perturbations

In this paper, we consider a Diophantine quasi-periodic time-dependent analytic perturbation of a convex integrable Hamiltonian system, and we prove a result of stability of the action variables for an exponentially long interval of time. This extends known results for periodic time-dependent perturbations, and partly solves a long standing conjecture of Chirikov and Lochak. We also obtain improved stability estimates close to resonances or far away from resonances, and a more general result without any Diophantine condition.

preprint2015arXivOpen access
Abed Bounemoura
math.DS
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Abed Bounemoura

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