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Introduction: The Fermi–Pasta–Ulam problem—The first fifty years

✍ Scribed by Campbell, David K.; Rosenau, Phillip; Zaslavsky, George M.

Book ID
118069672
Publisher
American Institute of Physics
Year
2005
Tongue
English
Weight
676 KB
Volume
15
Category
Article
ISSN
1054-1500

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Fermi, Pasta and Ulam observed that the excitation of a low frequency normal mode in a nonlinear acoustic chain leads to localization in normal mode space on large time scales. Fast equipartition (and thus complete delocalization) in the Fermi-Pasta-Ulam chain is restored if relevant intensive contr