Geodesic
Bifurcations of solitary waves
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 4 (2008), pp. 529-550

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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 framework of the generalized nonlinear Schrodinger 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. 
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     author = {E. A. Kuznetsov and D. S. Agafontsev and F. Dias},
     title = {Bifurcations of solitary waves},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
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E. A. Kuznetsov; D. S. Agafontsev; F. Dias. Bifurcations of solitary waves. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 4 (2008), pp. 529-550. http://geodesic.mathdoc.fr/item/JMAG_2008_4_a3/