Quasi-classical DBAR-dressing approach to the weakly dispersive KP hierarchy

Details Quasi-classical DBAR-dressing approach to the weakly dispersive KP hierarchy Quasi-classical DBAR-dressing approach to the weakly dispersive KP hierarchy

2003-03-27

arxiv.org/abs/nlin/0303063v4

J.Phys.A:Math.Gen vol.36, 11837-11851 (2003)

Nonlinear Sciences

Exactly Solvable and Integrable Systems

24 pages

Scientific paper

10.1088/0305-4470/36/47/010

Recently proposed quasi-classical DBAR-dressing method provides a systematic approach to study the weakly dispersive limit of integrable systems. We apply the quasi-classical DBAR-dressing method to describe dispersive corrections of any order. We show how calculate the DBAR problems at any order for a rather general class of integrable systems, presenting explicit results for the KP hierarchy case. We demonstrate the stability of the method at each order. We construct an infinite set of commuting flows at first order which allow a description analogous to the zero order (purely dispersionless) case, highlighting a Whitham type structure. Obstacles for the construction of the higher order dispersive corrections are also discussed.

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