A Riemann-Hilbert approach for the Degasperis-Procesi equation

Abstract

We present an inverse scattering transform approach to the Cauchy problem on the line for the Degasperis--Procesi equation $u_t-u_{txx}+3\omega u_x+4u{u}_x=3u_x{u}_{xx}+u{u}_{xxx}$ in the form of an associated Riemann-Hilbert problem. This approach allows us to give a representation of the solution to the Cauchy problem, which can be efficiently used in studying its long-time behavior.

The title of this revised version is slightly different

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