A generalization of Nekhoroshev's theorem

作者：Bates Larry^*; Cushman Richard

来源：Regular & Chaotic Dynamics, 2016, 21(6): 639-642.

DOI：10.1134/S1560354716060046

• periodic orbits
• Hamiltonian systems

Nekhoroshev discovered a beautiful theorem in Hamiltonian systems that includes as special cases not only the Poincar, theorem on periodic orbits but also the theorem of Liouville-Arnol'd on completely integrable systems [7]. Sadly, his early death precluded him publishing a full account of his proof. The aim of this paper is twofold: first, to provide a complete proof of his original theorem and second a generalization to the noncommuting case. Our generalization of Nekhoroshev's theorem to the nonabelian case subsumes aspects of the theory of noncommutative complete integrability as found in Mishchenko and Fomenko [5] and is similar to what Nekhoroshev's theorem does in the abelian case.

• 出版日期2016-11