论文标题
小原始黑洞周围的热点形成
Formation of hot spots around small primordial black holes
论文作者
论文摘要
在本文中，我们研究了早期宇宙中原始黑洞（PBH）的鹰辐射的热化，考虑到干扰对高能量颗粒的热作用的影响，称为Landau-Pomeranchuk-Migdal（LPM）效应。带有质量的小pbhs $ \ sillsim 10^9 \，\ mathrm {g} $在大爆炸核合成（BBN）之前完全蒸发。这些PBH发出的鹰辐射将温度低于鹰温度的温度加热环境等离子体，这导致PBH周围的非平凡温度曲线，即围绕PBH的热点围绕PBH，有损坏的幂律尾巴。我们发现，热点的核心比黑洞地平线大得多，其最高温度独立于PBH的初始质量，例如$ 2 \ times 10^{9} \，{\ rm Gev} \ times（α/0.1）我们还简要讨论了热点对现象学的存在的含义。
In this paper, we investigate the thermalization of Hawking radiation from primordial black holes (PBHs) in the early Universe, taking into account the interference effect on thermalization of high energy particles, known as Landau-Pomeranchuk-Migdal (LPM) effect. Small PBHs with masses $ \lesssim 10^9 \, \mathrm{g} $ completely evaporate before the big bang nucleosynthesis (BBN). The Hawking radiation emitted from these PBHs heats up the ambient plasma with temperature lower than the Hawking temperature, which results in a non-trivial temperature profile around the PBHs, namely a hot spot surrounding a PBH with a broken power-law tail. We find that the hot spot has a core with a radius much larger than the black hole horizon and its highest temperature is independent of the initial mass of the PBH such as $2 \times 10^{9} \, {\rm GeV} \times (α/0.1)^{19/3}$, where $α$ generically represents the fine-structure constants. We also briefly discuss the implications of the existence of the hot spot for phenomenology.
