Summary
A Hamiltonian withN degrees of freedom, analytic perturbation of a canonically integrable strictly nonisochronous analytic Hamiltonian, is considered. We show the existence ofN functions on phase space and of classC ∞ which are prime integrals for the perturbed motions on a suitable region whose Lebesgue measure tends to fill locally the phase space as the perturbation’s magnitude approaches zero. An application to the perturbations of isochronous nonresonant linear oscillators is given.
Riassunto
Si considera un sistema hamiltoniano aN gradi di libertà, perturbazione analitica di un sistema analiticamente e canonicamente integrabile e strettamente non isocrono. Si mostra l’esistenza diN funzioni definite sullo spazio delle fasi e ivi di classeC ∞ che sono integrali primi per il moto perturbato su opportune regioni la cui misura di Lebesgue tende a riempire localmente lo spazio delle fasi al tendere a zero della perturbazione. S’illustra un’applicazione alle perturbazioni di oscillatori isocroni non risonanti.
Similar content being viewed by others
References
V. Arnold:Russ. Math. Surv.,18, 85 (1963);J. Moser:Stable and random motions in dynamical systems, inHermann Weyl Lectures (Princeton, N. J., and Tokyo, 1973).
G. Gallavotti:Meccanica elementare (Torino, 1980).
J. Pöschel:Über differenzierbare Faserungen invarianter Tori, preprint ETH, Zürich (1981),.
H. Whitney:Trans. Am. Math. Soc.,36, 63 (1934).
T. Nishida:Mem. Fac. Eng. Kyoto Univ. 33, 27 (1971).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chierchia, L., Gallavotti, G. Smooth prime integrals for quasi-integrable Hamiltonian systems. Nuov Cim B 67, 277–295 (1982). https://doi.org/10.1007/BF02721167
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02721167