论文标题
光原始黑洞的深色辐射约束
Dark radiation constraints on light primordial black holes
论文作者
论文摘要
通过大型原始密度波动的崩溃，可能在早期的宇宙中形成了浅黑色孔。这些原始的黑洞（PBHS），如果足够轻，由于鹰辐射的发射，现在将蒸发。因此，他们今天无法代表大量的暗物质。但是，他们本来可以在早期的宇宙学时代留下烙印。我们将在大爆炸核合成（BBN）开始之前通过（旋转）PBH进行讨论，并结论得出结论，这种对黑暗辐射的贡献受到宇宙微波背景（CMB）（CMB）（CMB阶段4）的限制（未来的CMB阶段4）和BBN的较轻范围的PBH MasseSiss范围较轻的范围是众所周知，这些范围是在PBH Mass范围的较轻范围内的忙碌。
Light black holes could have formed in the very early universe through the collapse of large primordial density fluctuations. These primordial black holes (PBHs), if light enough, would have evaporated by now because of the emission of Hawking radiation; thus they could not represent a sizable fraction of dark matter today. However, they could have left imprints in the early cosmological epochs. We will discuss the impact of massless graviton emission by (rotating) PBHs before the onset of big bang nucleosynthesis (BBN) and conclude that this contribution to dark radiation is constrained by the cosmic microwave background (CMB) (with the future CMB Stage 4) and BBN in the lighter portion of the PBH mass range, under the hypothesis that they dominated the energy density of the universe.
