A Coupled Korteweg-de Vries System and Mass Exchanges among Solitons

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    We study an N-component, symmetrically coupled system of Korteweg-de Vries (KdV) equations that is integrable in the context of the sl(N+1) AKNS hierarchy. We show how the coupled system can be solved through a combination of the well-known inverse-scattering transform for (one-component) KdV and the solution of a linear equation with nonconstant coefficients. The coupled KdV system may be viewed as a phenomenological model for the sharing of mass among interacting solitons of the (one-component) KdV equation. Results for the scattering theory of solutions of the nonconstant coefficient linear equation arising in the solution of the coupled system are used to quantify the redistribution of mass during soliton collisions within the framework of the coupled KdV model.
    Original languageEnglish
    JournalPhysica Scripta. Topical Issues
    Issue number5
    Pages (from-to)518-525
    Publication statusPublished - 2000


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