Soliton asymptotics for KdV shock waves via classical inverse scattering
I. Egorova, J. Michor, and G. Teschl
Keywords: KdV equation, shock wave, inverse scattering transform, solitons.
Abstract: We show how the inverse scattering transform can be used as a convenient tool to derive the long-time asymptotics of shock waves for the Korteweg--de Vries (KdV) equation in the soliton region. In particular, we improve the results previously obtained via the nonlinear steepest decent approach both with respect to the decay of the initial conditions as well as the region where they are valid.
MSC: Primary 37K40, 35Q53; Secondary 37K45, 35Q15.
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