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arXiv 1106.4466gr-qcmath-phmath.APmath.MP
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一般球对称类质点几何中的波动方程

The Wave Equation in a General Spherically Symmetric Particlelike Geometry

Matthew P. Masarik

摘要:

本文考虑一类球对称几何中波动方程的Cauchy问题,其初值是光滑的,紧支撑的,且全局光滑且渐近平坦。在一定的远场衰减条件下,我们证明了存在唯一的全局光滑解,该解对所有时间和\emph{decays in $L^{\infty}_{\text{loc}}$ as $t$ tends to infinity}都是紧支持的。由于粒子几何是无奇点的,它们在原点处增加了额外的困难。因此,这项研究需要的思想和技术不存在于黑洞几何的波动方程的研究。作为推论,我们得到SU(2)Einstein/Yang-Mills方程类粒子解几何中波动方程的解衰减为$t\to \infty$ .

英文摘要:

We consider the Cauchy problem with smooth and compactly supported initial data for the wave equation in a general class of spherically symmetric geometries which are globally smooth and asymptotically flat. Under certain mild conditions on the far-field decay, we show that there is a unique globally smooth solution which is compactly supported for all times and \emph{decays in $L^{\infty}_{\text{loc}}$ as $t$ tends to infinity}. Because particlelike geometries are singularity free, they impose additional difficulties at the origin. Thus this study requires ideas and techniques not present in the study of wave equations in black hole geometries. We obtain as a corollary that solutions to the wave equation in the geometry of particle-like solutions of the SU(2) Einstein/Yang-Mills equations decay as $t\to \infty$.

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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