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arXiv 1506.02503gr-qc
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球形引力坍缩中的拓扑变化

Topology change in spherical gravitational collapse

Sabbir Rahman

摘要:

我们认为,通过Datt-Oppenheimer-Snyder型引力坍缩的史瓦西黑洞的形成必须伴随着拓扑结构的变化后,形成的事件视界,物理上分离的物质在内部从外部。虽然穿过事件视界的坍缩物质确实会继续落向史瓦西内部的奇点,但这个区域实际上并不包含最初导致坍缩的物质。相反,后者占据了一个独特的内部时空区域,具有自己的独立演化。最简单黑洞的这个附加成分的存在有许多深刻的含义-史瓦西黑洞是稳定的,质量不变;它们每个都在事件视界内包含一个自足的小宇宙;它们生活在一个本质上是双层的时空中。

英文摘要:

We argue that the formation of a Schwarzschild black hole via Datt-Oppenheimer-Snyder type gravitational collapse must be accompanied by a change in topology upon formation of the event horizon which physically separates matter in the interior from that of the exterior. While it is true that collapsing matter crossing the event horizon continues to fall towards the singularity of the Schwarzschild interior, this region does not in fact contain the matter originally responsible for the collapse. Rather, the latter occupies a distinct internal spacetime region with its own independent evolution. The existence of this additional component of the simplest black hole has a number of profound implications - Schwarzschild black holes are stable with constant mass; they each contain a self-contained mini-universe within their event horizons; and they live within a spacetime that is inherently double-sheeted.

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