Resonant normal form for even periodic FPU chains
نویسندگان
چکیده
منابع مشابه
Resonant normal form for even periodic FPU chains
We investigate periodic FPU chains with an even number of particles. We show that near the equilibrium point, any such chain admits a resonant Birkhoff normal form of order four which is completely integrable—an important fact which helps explain the numerical experiments of Fermi, Pasta, and Ulam. We analyze the moment map of the integrable approximation of an even FPU chain. Unlike the case o...
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ژورنال
عنوان ژورنال: Journal of the European Mathematical Society
سال: 2009
ISSN: 1435-9855
DOI: 10.4171/jems/174