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arXiv 1208.6480gr-qchep-th
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防火墙还是平滑地平线?

Firewall or smooth horizon?

Amos Ori

摘要:

最近,阿尔姆黑里、马罗夫、波尔钦斯基和萨利发现,对于一个足够老的黑洞(BH),被称为\emph{complementarity postulates}的一组假设似乎与视界局部正则性的假设不一致。他们的结论是,一个老黑洞的地平线很可能是当地不规则性的所在地,一个“防火墙”。在这里我指出,如果采用一个不同的假设,即半经典物理学在其预期的有效性范围内保持不变,那么似乎就不会出现不一致,视界也会保持其规律性。在这种观点中,原始BH信息的绝大部分在蒸发的半经典域中仍然被困在BH中,并可能在以后泄漏出来,这似乎是半经典引力的必然结果。

英文摘要:

Recently, Almheiri, Marolf, Polchinski, and Sully found that for a sufficiently old black hole (BH), the set of assumptions known as the \emph{complementarity postulates} appears to be inconsistent with the assumption of local regularity at the horizon. They concluded that the horizon of an old BH is likely to be the locus of local irregularity, a "firewall". Here I point out that if one adopts a different assumption, namely that semiclassical physics holds throughout its anticipated domain of validity, then no inconsistency seems to arise, and the horizon retains its regularity. In this alternative view-point, the vast portion of the original BH information remains trapped inside the BH throughout the semiclassical domain of evaporation, and possibly leaks out later on. This appears to be an inevitable outcome of semiclassical gravity.

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