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arXiv 0908.0799gr-qc
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D维球对称真空时空的最大切片

Maximal slicing of D-dimensional spherically-symmetric vacuum spacetime

Ken-ichi Nakao, Hiroyuki Abe, Hirotaka Yoshino, Masaru Shibata

摘要:

本文利用两类单参数极大超曲面族研究了具有$D\ge 5$的$D$维球对称黑洞时空的叶理:关于虫洞槽的反射对称叶理和具有无限长喇叭状形状的稳态叶理.与四维情形一样,极大超曲面的叶理具有与维数无关的奇异性避免性质。这表明最大切片条件对于数值相对论中高维黑洞时空的模拟是有用的。对于D=5的情形,我们给出了定常极大超曲面的叶理的内在度量、外在曲率、推移函数和位移向量的解析解。这些数据将是有用的检查五维数值相对论代码的移动穿刺方法的基础上。

英文摘要:

We study the foliation of a $D$-dimensional spherically symmetric black-hole spacetime with $D\ge 5$ by two kinds of one-parameter family of maximal hypersurfaces: a reflection-symmetric foliation with respect to the wormhole slot and a stationary foliation that has an infinitely long trumpet-like shape. As in the four-dimensional case, the foliations by the maximal hypersurfaces have the singularity avoidance nature irrespective of dimensionality. This indicates that the maximal slicing condition will be useful for simulating higher-dimensional black-hole spacetimes in numerical relativity. For the case of D=5, we present analytic solutions of the intrinsic metric, the extrinsic curvature, the lapse function, and the shift vector for the foliation by the stationary maximal hypersurfaces. This data will be useful for checking five-dimensional numerical relativity codes based on the moving puncture approach.

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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