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arXiv 1902.05565gr-qc
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曲率不变量与低维黑洞视界

Curvature Invariants and Lower Dimensional Black Hole Horizons

Daniele Gregoris, Yen Chin Ong, Bin Wang

摘要:

众所周知,黑洞的事件视界通常可以由某些曲率不变量的零点来识别。低维的情况还没有完全弄清楚。在这项工作中,我们研究了(2+1)-和(1+1)-维黑洞视界的静态,静止和动态黑洞,确定与零的标量多项式和Cartan曲率不变量,与区别的Weyl和Riemann曲率张量所发挥的不同作用的目的。这些方法的应用场合和适用范围与四维时空中的方法有很大的不同。用于检测视界的合适的Cartan不变量可以被解释为潮汐力的局部极值,这表明黑洞的视界是完全流形内真正的特殊超曲面,与通常的视界没有特殊的说法相反,这被认为是等效原理的结果。

英文摘要:

It is known that the event horizon of a black hole can often be identified from the zeroes of some curvature invariants. The situation in lower dimensions has not been thoroughly clarified. In this work we investigate both (2+1)- and (1+1)-dimensional black hole horizons of static, stationary and dynamical black holes, identified with the zeroes of scalar polynomial and Cartan curvature invariants, with the purpose of discriminating the different roles played by the Weyl and Riemann curvature tensors. The situations and applicability of the methods are found to be quite different from that in 4-dimensional spacetime. The suitable Cartan invariants employed for detecting the horizon can be interpreted as a local extremum of the tidal force suggesting that the horizon of a black hole is a genuine special hypersurface within the full manifold, contrary to the usual claim that there is nothing special at the horizon, which is said to be a consequence of the equivalence principle.

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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