Bifurcations of solitary waves

E. A. Kuznetsov, D. S. Agafontsev, F. Dias

    Research output: Contribution to journalArticlepeer-review


    The paper provides a brief review of the recent results devoted to bifurcations of solitary waves. The main attention is paid to the universality of soliton behavior and stability of solitons while approaching supercritical bifurcations. Near the transition point from supercritical to subcritical bifurcations, the stability of two families of solitons is studied in the frame-work of the generalized nonlinear Schrödinger equation. It is shown that one-dimensional solitons corresponding to the family of supercritical bifurcations are stable in the Lyapunov sense. The solitons from the subcritical bifurcation branch are unstable. The development of this instability results in the collapse of solitons. Near the time of collapse, the pulse amplitude and its width exhibit a self-similar behavior with a small asymmetry in the pulse tails due to self-steepening.

    Original languageEnglish
    Pages (from-to)529-550
    Number of pages22
    JournalJournal of Mathematical Physics, Analysis, Geometry
    Issue number4
    Publication statusPublished - 2008


    • Critical regimes
    • Stability
    • Wave collapse


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