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arXiv 0705.1359gr-qc
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Schwarzschild黑洞的穿点演化

Puncture Evolution of Schwarzschild Black Holes

J. David Brown

摘要:

对单个非自旋黑洞的运动穿刺方法进行了分析。结果表明,目前的数字代码不能解决的穿刺区域。结果,穿刺附近的几何形状似乎演变成一个无限长的圆柱体的有限面积半径。在整个进化过程中,这个穿刺点本身实际上一直保持在类空的无穷远处。在无限分辨率的极限下,数据永远不会变成静止的。然而,在任何合理的有限分辨率下,最接近穿孔的网格点被伽马驱动位移条件迅速拉入黑洞内部。然后,数据可以演变为稳定状态。这些结果表明,移动穿刺技术应被视为一种“自然切除”。

英文摘要:

The moving puncture method is analyzed for a single, non-spinning black hole. It is shown that the puncture region is not resolved by current numerical codes. As a result, the geometry near the puncture appears to evolve to an infinitely long cylinder of finite areal radius. The puncture itself actually remains at spacelike infinity throughout the evolution. In the limit of infinite resolution the data never become stationary. However, at any reasonable finite resolution the grid points closest to the puncture are rapidly drawn into the black hole interior by the Gamma-driver shift condition. The data can then evolve to a stationary state. These results suggest that the moving puncture technique should be viewed as a type of "natural excision".

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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