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arXiv 1105.0878gr-qchep-th
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Painleve Gullstrand坐标系下的高维Choptuik标度

Higher Dimensional Choptuik Scaling in Painleve Gullstrand Coordinates

Tim Taves, Gabor Kunstatter

摘要:

我们使用Painleve-Gullstrand(P-G)坐标研究了高维无质量标量场球对称坍缩中的Choptuik标度。我们的分析证实了最近在四维坍缩中观察到的周期性标度关系中的尖点在高维中的存在。此外,我们解决的问题的临界指数的渐近行为的时空维度的数量变得很大。我们的结果是一致的,与早期的工作表明,临界指数单调接近1/2在这个极限。

英文摘要:

We investigate Choptuik scaling in the spherically symmetric collapse of a massless scalar field in higher dimensions using Painleve-Gullstrand (P-G) coordinates. Our analysis confirms the presence in higher dimensions of the cusps in the periodic scaling relationship recently observed in four dimensional collapse. In addition, we address the issue of the asymptotic behaviour of the critical exponent as the number of spacetime dimensions gets large. Our results are consistent with earlier work suggesting that the critical exponent monotonically approaches 1/2 in this limit.

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