Solitary waves on Fermi-Pasta-Ulam lattices: IV. Proof of stability at low energy

G. Friesecke, R. L. Pego

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

We establish the long-time stability of low-energy solitary waves in one-dimensional nonintegrable lattices with Hamiltonian H = Σ j∈ℤ (1/2pj2 + V (qj+1 - qj)) with a general nearest-neighbour potential V. As a corollary we obtain a recurrence theorem related to numerical observations by Fermi, Pasta and Ulam.

Original languageEnglish
Pages (from-to)229-251
Number of pages23
JournalNonlinearity
Volume17
Issue number1
DOIs
StatePublished - Jan 2004
Externally publishedYes

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