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arXiv 1411.7878gr-qc
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静态扩展到类空无穷远的爱因斯坦方程初值的数值构造

Numerical construction of initial data for Einstein's equations with static extension to space-like infinity

Georgios Doulis, Oliver Rinne

摘要:

基于Corvino(2000)的胶合方法,我们描述了一种构造扩展到类空无穷远的Cauchy数据的数值方法。采用Giulini和Holzegel(2005)的设置,我们在这里将自己限制在真空轴对称时空中,并将一个Schwarzschildean端粘到描述两个非旋转黑洞的Brill-Lindquist数据上。我们的数值实现是基于伪谱方法,我们进行了广泛的收敛性测试,以检查我们的数值结果的有效性。我们还调查了总ADM质量上的胶合施工的细节的依赖性。

英文摘要:

We describe a numerical method to construct Cauchy data extending to space-like infinity based on Corvino's (2000) gluing method. Adopting the setting of Giulini and Holzegel (2005), we restrict ourselves here to vacuum axisymmetric spacetimes and glue a Schwarzschildean end to Brill-Lindquist data describing two non-rotating black holes. Our numerical implementation is based on pseudo-spectral methods, and we carry out extensive convergence tests to check the validity of our numerical results. We also investigate the dependence of the total ADM mass on the details of the gluing construction.

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