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arXiv 0710.0388hep-thgr-qc
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极值和非极值黑洞的霍金辐射

Hawking radiation from extremal and non-extremal black holes

R. Balbinot, A. Fabbri, S. Farese, R. Parentani

摘要:

批判性地分析了非极值和极值Reissner Nordstrom黑洞发射的霍金辐射之间的关系。对一系列规则坍缩几何的仔细研究表明,应力能张量在极值极限处保持规则,并与非极值黑洞的应力能张量光滑连接。意想不到的特点是,在非极值情况下发挥作用不大的后期瞬态是必要的,以保持在极值情况下的通量的定义良好的字符。已知的极端黑洞的静态能量密度的奇异行为是恢复从我们的系列忽略这些瞬态,当执行原来是一个非法的后期时间限制。虽然我们的结果是在二维的设置,我们解释了为什么他们也应该适用于高维黑洞。

英文摘要:

The relationship between Hawking radiation emitted by non extremal and extremal Reissner Nordstrom black holes is critically analyzed. A careful study of a series of regular collapsing geometries reveals that the stress energy tensor stays regular in the extremal limit and is smoothly connected to that of non extremal black holes. The unexpected feature is that the late time transients which played little role in the non extremal case are necessary to preserve the well defined character of the flux in the extremal case. The known singular behavior of the static energy density of extremal black holes is recovered from our series by neglecting these transients, when performing what turns out to be an illegitimate late time limit. Although our results are derived in two dimensional settings, we explain why they should also apply to higher dimensional black holes.

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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