Well-posedness and scattering for the KP-II equation in a critical space

Details Well-posedness and scattering for the KP-II equation in a critical space Well-posedness and scattering for the KP-II equation in a critical space

2007-08-15

arxiv.org/abs/0708.2011v3

Ann. I. H. Poincare - AN (2009), Vol. 26, No. 3, pp. 917-941; Erratum: Ann. I. H. Poincare - AN (2010), Vol. 27, No. 3, pp. 97

Mathematics

Analysis of PDEs

28 pages; v3: erratum included

Scientific paper

10.1016/j.anihpc.2008.04.002 10.

The Cauchy problem for the Kadomtsev-Petviashvili-II equation (u_t+u_{xxx}+uu_x)_x+u_{yy}=0 is considered. A small data global well-posedness and scattering result in the scale invariant, non-isotropic, homogeneous Sobolev space \dot H^{-1/2,0}(R^2) is derived. Additionally, it is proved that for arbitrarily large initial data the Cauchy problem is locally well-posed in the homogeneous space \dot H^{-1/2,0}(R^2) and in the inhomogeneous space H^{-1/2,0}(R^2), respectively.

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