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arXiv 1507.07320math.AP
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周期非线性薛定谔方程正则性的概率保持性

Probabilistic preservation of regularity for periodic nonlinear Schrödinger equations

Andrea R. Nahmod, Gigliola Staffilani

摘要:

对于某些非线性发展方程,大数据下整体时间流的存在性是一个基本而困难的问题。一般来说,对于色散方程和波动方程,数据的高正则性并不能自动保证全局流的存在。首先需要证明一个整体的结果在一个水平的规律性,匹配的守恒量。然后,保持规律性允许证明对于所有更平滑的数据存在全局流。这种机制不能应用在非确定性的设置,如全局适定性的统计系综不变(吉布斯)措施,首先得到的布尔甘。我们提出了一个新的和一般的技术来证明,数据平滑比那些在统计合奏引起全球流量,尽管这样的平滑数据进行的措施不再是不变的。因此,我们关闭了一个重要的差距在某些非线性薛定谔方程的整体解的存在性。

英文摘要:

For certain non linear evolution equations, existence of global in time flows for large data is a fundamental and difficult question. In general, for dispersive and wave equations high regularity of the data does not automatically guarantee the existence of a global flow. One first needs to prove a global result at a level of regularity that matches that of a conserved quantity. Then, preservation of regularity allows to prove that the global flow exists for all smoother data. This mechanism cannot be applied in the non deterministic setting, such as the global well-posedness on the statistical ensemble of an invariant (Gibbs) measure, first obtained by Bourgain. We present a new and general technique to prove that data smoother than those in the statistical ensemble give rise to global flows, despite the fact that the measures carried by such smoother data are no longer invariant. As a consequence we close an important gap in the existence of global solutions for certain nonlinear Schrödinger equations.

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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