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arXiv 0910.4653math.AP
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Schrödinger-Korteweg-de Vries系统的Cauchy问题

The Cauchy Problem of the Schrödinger-Korteweg-de Vries System

Yifei Wu

摘要:

研究了Schrödinger-Korteweg-de Vries系统的Cauchy问题。首先,我们建立了局部适定性结果,改进了Corcho,Linares(2007)的结果。此外,我们还得到了一些不适定性的结果,这些结果表明它们在某些适定性阈值下是尖锐的。特别地,我们得到了$H^{-{3/16}+}(\R)\times H^{-{3/4}+}(\R)$中初始数据在共振情况下的局部适定性,除了端点外,它几乎是最优的。最后我们建立了$H^s(\R)\times H^s(\R)$的整体适定性结果,当$s>\dfrac{1}{2}$在共振和非共振情况下都成立时,改进了Pecher(2005)的结果.

英文摘要:

We study the Cauchy problem of the Schrödinger-Korteweg-de Vries system. First, we establish the local well-posedness results, which improve the results of Corcho, Linares (2007). Moreover, we obtain some ill-posedness results, which show that they are sharp in some well-posedness thresholds. Particularly, we obtain the local well-posedness for the initial data in $H^{-{3/16}+}(\R)\times H^{-{3/4}+}(\R)$ in the resonant case, it is almost the optimal except the endpoint. At last we establish the global well-posedness results in $H^s(\R)\times H^s(\R)$ when $s>\dfrac{1}{2}$ no matter in the resonant case or in the non-resonant case, which improve the results of Pecher (2005).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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