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arXiv 1709.09710gr-qcmath.AP
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Gowdy时空中奇点的解析描述

Analytic description of singularities in Gowdy spacetimes

Satyanad Kichenassamy, Alan D. Rendall

摘要:

我们利用Fuchsian约化构造了Gowdy时空类爱因斯坦方程的奇异解。这些解具有最大数量的任意函数。特殊情况对应于极化或其他已知的解决方案。该方法提供了精确的渐近在奇异点,这是卡斯纳。所有这些解都是渐近速度占优的。结果解释了速度参数一致大于1的解在数值上没有被观察到的事实。它们还为Grubišić和Moncrief提议的正式扩大提供了理由。

英文摘要:

We use Fuchsian Reduction to construct singular solutions of Einstein's equations which belong to the class of Gowdy spacetimes. The solutions have the maximum number of arbitrary functions. Special cases correspond to polarized, or other known solutions. The method provides precise asymptotics at the singularity, which is Kasner-like. All of these solutions are asymptotically velocity-dominated. The results account for the fact that solutions with velocity parameter uniformly greater than one are not observed numerically. They also provide a justification of formal expansions proposed by Grubišić and Moncrief.

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