A breather-like localized mode in a Fermi-Pasta-Ulam lattice interacting with an electron

Y. Zolotaryuk, J. C. Eilbeck

Research output: Contribution to journalArticle

Abstract

A theoretical study in the framework of a variational approach is presented for the Fermi-Pasta-Ulam (FPU) chain interacting with an extra electron. Standing three-component soliton solutions which describe coupled states of an acoustic polaron with longitudinal lattice vibrations are found. This result is confirmed by numerical simulations and extended qualitatively to a chain with a realistic inter-particle potential of a general form.

Original languageEnglish
Pages (from-to)4553-4564
Number of pages12
JournalJournal of Physics: Condensed Matter
Volume10
Issue number21
DOIs
Publication statusPublished - 1 Jun 1998

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