Diffusion of randomly driven solitons in molecular chains

N. Flytzanis, Z. Ivic, B. A. Malomed

Research output: Contribution to journalLetterpeer-review


We examine the diffusive motion of solitons in a model of a molecular chain reducible to the non-linear Schrodinger equation driven by thermal fluctuations in the host lattice. Using the Fokker-Planck equation for the distribution function of the soliton’s position, we conclude that the soliton exhibits an effectively free random walk, the corresponding diffusion constant showing a linear temperature dependence.

Original languageEnglish
Pages (from-to)267-272
Number of pages6
JournalJournal de Physique (Paris), Lettres
Issue number5
StatePublished - 10 May 1995


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