Global rough solutions for the Zakharov system in two spatial dimensions

Details Global rough solutions for the Zakharov system in two spatial dimensions Global rough solutions for the Zakharov system in two spatial dimensions

2012-03-09

arxiv.org/abs/1203.2173v1

Mathematics

Analysis of PDEs

15 pages

Scientific paper

We show an improved global well-posedness result for the Zakharov system in two space dimensions with minimal regularity assumptions for the data. Especially we are able to allow Schroedinger and wave data, which do not belong to H^1 and L^2, respectively, thus with infinite energy. The proof uses a refined I-method originally initiated by Colliander, Keel, Staffilani, Takaoka and Tao and bilinear estimates by Bejenaru, Herr, Holmer and Tataru. A polynomial growth bound for the solution is also given.

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