arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1005.5347gr-qc
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真空轴对称Einstein方程的线性微扰

Linear perturbations for the vacuum axisymmetric Einstein equations

Sergio Dain, Martín Reiris

摘要:

在轴对称中,爱因斯坦方程有一个规范,使得时空的总质量可以写成类空切片上的一个守恒的正定积分。这一性质将在全球演化中发挥重要作用。在此规范下,方程化为一个耦合的双曲-椭圆方程组,该方程组在轴上形式上是奇异的。由于该系统的相当特殊的性质,当地的时间存在已被证明抵制分析的标准方法。为了分析方程的主要部分,这可能是困难的主要来源,我们研究了该规范中平坦Minkowski解周围的线性微扰。在这篇文章中,我们解决这个线性化系统明确的积分变换在一个显着的简单形式。这种表示法非常适合于获得适用于非线性情况的有用估计。

英文摘要:

In axial symmetry, there is a gauge for Einstein equations such that the total mass of the spacetime can be written as a conserved, positive definite, integral on the spacelike slices. This property is expected to play an important role in the global evolution. In this gauge the equations reduce to a coupled hyperbolic-elliptic system which is formally singular at the axis. Due to the rather peculiar properties of the system, the local in time existence has proved to resist analysis by standard methods. To analyze the principal part of the equations, which may represent the main source of the difficulties, we study linear perturbation around the flat Minkowski solution in this gauge. In this article we solve this linearized system explicitly in terms of integral transformations in a remarkable simple form. This representation is well suited to obtain useful estimates to apply in the non-linear case.

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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