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arXiv 1004.3035gr-qcastro-ph.HE
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引力坍缩过程中裸奇异区的能量损耗

Depletion of energy from Naked Singular regions during gravitational collapse

S. Jhingan, I. H. Dwivedi, S. Barve

摘要:

在引力坍缩过程中形成的时空裸奇异区的可区分且可观察的物理性质对实验和理论相对论都具有重要意义。在这里,我们研究能量是否可以逃离物理裸奇异区域到达本地或遥远的观察者在广义相对论的框架内。我们发现,在坍缩的情况下,空尘坍缩的场景场传出的奇异零测地线,包括柯西视界可以沉浸在两个Vaidya时空之间的零边界层与非零的正能量密度。因此,能量可以从裸奇点传输到本地或远处的观察者。并举例说明了类似的考虑可以应用到灰尘模型。

英文摘要:

A distinguishable and observable physical property of Naked Singular Regions of the spacetime formed during a gravitational collapse has important implications for both experimental and theoretical relativity. We examine here whether energy can escape physically from naked singular regions to reach either a local or a distant observer within the framework of general relativity. We find that in case of imploding null dust collapse scenarios field outgoing singular null geodesics including the cauchy horizon can be immersed between two Vaidya spacetimes as null boundary layers with non vanishing positive energy density. Thus energy can transported from the naked singularity to either a local or a distant observer. And example illustrating that similar considerations can be applied to dust models is given.

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