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arXiv 2301.05092gr-qcastro-ph.HE
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从仿射零坐标中的爱因斯坦方程导出的慢速旋转克尔度规

Slowly rotating Kerr metric derived from the Einstein equations in affine-null coordinates

Thomas Mädler, Emanuel Gallo

AI总结:

本文在仿射零坐标下通过准球近似和特征表述积分爱因斯坦方程,构造了慢速旋转轴对称真空时空的高阶度规近似,并证明其与Kerr度规在慢转近似下等价。

摘要:

利用适用于渐近Bondi惯性系的仿射零度规的准球近似,我们给出了一个缓慢旋转、稳态且轴对称真空时空中度规函数关于特定角动量的高阶近似。该度规是通过在特征表述中利用扰动的主函数,对爱因斯坦方程层级进行积分这一程序得到的。进一步通过执行从Boyer-Lindquist坐标到所用仿射零坐标的显式变换,验证了其在慢速旋转近似下与Kerr度规的等价性。

英文摘要:

Using a quasi-spherical approximation of an affine-null metric adapted to an asymptotic Bondi inertial frame, we present high order approximations of the metric functions in terms of the specific angular momentum for a slowly rotating stationary and axi-symmetric vacuum spacetime. The metric is obtained by following the procedure of integrating the hierarchy of Einstein equations in a characteristic formulation utilizing master functions for the perturbations. It is further verified its equivalence with the Kerr metric in the slowly rotation approximation by carrying out an explicit transformation between the Boyer-Lindquist coordinates to the employed affine-null coordinates.

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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