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arXiv 1306.4705math.AP
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渐近de Sitter,Kerr-de Sitter和Minkowski时空上的半线性wave equations

Semilinear wave equations on asymptotically de Sitter, Kerr-de Sitter and Minkowski spacetimes

Peter Hintz, Andras Vasy

摘要:

在本文中,我们证明了适当的半线性波和Klein-Gordon方程的小数据可解性的几何类的空间,其中包括所谓的渐近de Sitter和Kerr-de Sitter空间,以及渐近Minkowski空间。这些空间允许一般的无穷大,在渐近德西特设置中称为共形无穷大;闵可夫斯基类型设置是巴斯金,瓦西和翁施引入的非捕获洛伦兹散射度量。我们的结果是通过在适当的基于L^2的函数空间上显示基本线性算子的整体Fredholm性质和可逆性而得到的,这些空间也具有适当的代数或更复杂的乘法性质。线性框架是基于b-分析,在梅尔罗斯的意义上,介绍了在这方面的Vasy描述的渐近行为的解决方案的线性方程。分析的一个有趣的特点是,共振,即梅林变换的b-正规算子,这是“量子”(而不是纯粹的符号)对象的逆极点,发挥了重要作用。

英文摘要:

In this paper we show the small data solvability of suitable semilinear wave and Klein-Gordon equations on geometric classes of spaces, which include so-called asymptotically de Sitter and Kerr-de Sitter spaces, as well as asymptotically Minkowski spaces. These spaces allow general infinities, called conformal infinity in the asymptotically de Sitter setting; the Minkowski type setting is that of non-trapping Lorentzian scattering metrics introduced by Baskin, Vasy and Wunsch. Our results are obtained by showing the global Fredholm property, and indeed invertibility, of the underlying linear operator on suitable L^2-based function spaces, which also possess appropriate algebra or more complicated multiplicative properties. The linear framework is based on the b-analysis, in the sense of Melrose, introduced in this context by Vasy to describe the asymptotic behavior of solutions of linear equations. An interesting feature of the analysis is that resonances, namely poles of the inverse of the Mellin transformed b-normal operator, which are `quantum' (not purely symbolic) objects, play an important role.

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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