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arXiv 1105.4336gr-qc
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小压力扰动下黑洞形成的不稳定性

Instability of black hole formation under small pressure perturbations

Pankaj S. Joshi, Daniele Malafarina

摘要:

本文研究了在经典的黑洞形成过程中引入任意小的理想流体压力时引力坍缩终态的谱,如Oppenheimer,Snyder和Datt(OSD)[1]所描述的。这将先前关于切向压力的结果[2]扩展到更真实的理想流体坍缩场景。压力扰动类的存在被明确地示出,它具有的属性,注入任何最小的压力改变的动力学坍缩的最终命运从一个黑洞到一个裸奇点。因此,可以看出,在初始数据空间中,OSD模型的任何最小邻域都包含通向裸奇点结果的坍缩演化。这对引力坍缩中裸奇点形成的性质提供了一个有趣的见解。

英文摘要:

We investigate here the spectrum of gravitational collapse endstates when arbitrarily small perfect fluid pressures are introduced in the classic black hole formation scenario as described by Oppenheimer, Snyder and Datt (OSD) [1]. This extends a previous result on tangential pressures [2] to the more physically realistic scenario of perfect fluid collapse. The existence of classes of pressure perturbations is shown explicitly, which has the property that injecting any smallest pressure changes the final fate of the dynamical collapse from a black hole to a naked singularity. It is therefore seen that any smallest neighborhood of the OSD model, in the space of initial data, contains collapse evolutions that go to a naked singularity outcome. This gives an intriguing insight on the nature of naked singularity formation in gravitational collapse.

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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