球形引力坍缩的穿孔规喇叭解
The trumpet solution from spherical gravitational collapse with puncture gauges
摘要：
我们研究了通过演化一个坍缩的球形恒星与常规采用的研究穿刺黑洞的规范所获得的静态的最终状态。我们比较了最终状态的崩溃与喇叭解决方案中发现的一个单一的虫洞片的演变，并表明这两种解决方案密切一致。我们证明，该协议是由使用的伽马驱动程序的移位条件，这使得该问题，以下跌到一个区域的时空，这是不解决的数值网格，并同时发现固定坐标的喇叭外的问题。
英文摘要：
We investigate the stationary end-state obtained by evolving a collapsing spherical star with the gauges routinely adopted to study puncture black holes. We compare the end-state of the collapse with the trumpet solution found in the evolution of a single wormhole slice and show that the two solutions closely agree. We demonstrate that the agreement is caused by the use of the Gamma-driver shift condition, which allows the matter to fall inwards into a region of spacetime that is not resolved by the numerical grid, and which simultaneously finds the stationary coordinates of the trumpet outside the matter.
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