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arXiv 1106.2116math.AP
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Klein-Gordon-Schrödinger系统的一些新的适定性结果

Some new well-posedness results for the Klein-Gordon-Schrödinger system

Hartmut Pecher

摘要:

我们考虑二维和三维Klein-Gordon-Schrödinger系统的Cauchy问题。在二维中,我们证明了薛定谔数据在H^s中的局部适定性和波动数据在H^σ x H^{σ-1}中的局部适定性,其中s=-1/4 +和σ= -1/2,而不适定性在s<-1/4或σ<-1/2时成立,全局适定性在s \ge 0和s- 1/2 \le σ< s+ 3/2时成立。在3D中,我们证明了s \ge 0,s - 1/2 < σ \le s+1的全局适定性。我们的结果的基础是Bejenaru,Herr,Holmer和Tataru,Bejenaru和Herr对Zakharov系统的研究,以及Colliander,Holmer和Tzirakis对Zakharov和Klein-Gordon-Schrodinger系统的整体适定性结果.

英文摘要:

We consider the Cauchy problem for the 2D and 3D Klein-Gordon-Schrödinger system. In 2D we show local well-posedness for Schrödinger data in H^s and wave data in H^σ x H^{σ-1} for s=-1/4 + and σ= -1/2, whereas ill-posedness holds for s<- 1/4 or σ<-1/2, and global well-posedness for s\ge 0 and s- 1/2 \le σ< s+ 3/2. In 3D we show global well-posedness for s \ge 0, s - 1/2 < σ\le s+1. Fundamental for our results are the studies by Bejenaru, Herr, Holmer and Tataru, and Bejenaru and Herr for the Zakharov system, and also the global well-posedness results for the Zakharov and Klein-Gordon-Schrödinger system by Colliander, Holmer and Tzirakis.

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