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arXiv 2102.06517gr-qcastro-ph.COhep-ph
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微观黑洞的霍金辐射反冲

Hawking-Radiation Recoil of Microscopic Black Holes

Samuel Kováčik

摘要:

霍金辐射会使微观黑洞迅速蒸发,这就把它们排除在许多天体物理学的考虑之外。然而,有人认为空间的量子性质会改变这种行为:普朗克大小的黑洞的温度消失了,留下的是具有$\approx 10^{-70}\mbox{m}^2$横截面的普朗克质量残余物,这使得直接观察几乎不可能。这样的黑洞残余物已经被确定为可能的暗物质候选者。在这里,我们认为,蒸发的最后阶段有一个反冲效应,使他们的速度高达$\approx 10^{-1} c$。这将导致与冷暗物质宇宙学模型的分歧,除非原始黑洞的形成在暴胀时代后不久停止。

英文摘要:

Hawking radiation would make microscopic black holes evaporate rapidly, which excludes them from many astrophysical considerations. However, it has been argued that the quantum nature of space would alter this behaviour: the temperature of a Planck-size black hole vanishes, and what is left behind is a Planck-mass remnant with the cross-section of $\approx 10^{-70}\mbox{m}^2$, which makes a direct observation nearly impossible. Such black hole remnants have been identified as possible dark matter candidates. Here, we argue that the final stage of evaporation has a recoil effect that gives them a velocity up to $\approx 10^{-1} c$. This would lead to a disagreement with the cold dark matter cosmological model unless the primordial black hole formation ceased shortly after the inflation era.

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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