论文标题
黑暗的尺寸，滚筒和暗物质分数由原始黑洞组成
The Dark Dimension, the Swampland, and the Dark Matter Fraction Composed of Primordial Black Holes
论文作者
论文摘要
最近，有人提出，将沼泽程序与黑暗能量的较小度相结合，并面对这些想法以实验，从而预测了单个额外维度（称为黑暗维度）的存在，并在微观范围内具有特征性的长度尺度。我们表明，霍金辐射的速率减慢了对黑洞的感知到暗尺寸，并讨论了我们发现在评估可能由原始黑洞组成的暗物质分数中的影响。我们证明，对于$ {\ cal o}（10^{10}〜{\ rm gev}）$的物种量表，就原始黑洞而言，对于$ 10^{14} \ leq m_ {bh}/{bh}/{bh}/{$ rm rm g}的群体，就原始黑洞而言，全黑孔的解释应该是可行的。与4D理论相比，在低质量区域中，该范围扩大了3个数量级。我们还表明，具有$ M _ {\ rm bh} \ sim 10^{12}〜{\ rm g} $的PBHS，如果它们构成了总深暗物质密度的一小部分，则可以潜在地解释出众所周知的银河511 Kev Gamma-ray线。
Very recently, it was suggested that combining the Swampland program with the smallness of the dark energy and confronting these ideas to experiment lead to the prediction of the existence of a single extra-dimension (dubbed the dark dimension) with characteristic length-scale in the micron range. We show that the rate of Hawking radiation slows down for black holes perceiving the dark dimension and discuss the impact of our findings in assessing the dark matter fraction that could be composed of primordial black holes. We demonstrate that for a species scale of ${\cal O}(10^{10}~{\rm GeV})$, an all-dark-matter interpretation in terms of primordial black holes should be feasible for masses in the range $10^{14} \leq M_{BH}/{\rm g}\leq 10^{21}$. This range is extended compared to that in the 4D theory by 3 orders of magnitude in the low mass region. We also show that PBHs with $M_{\rm BH} \sim 10^{12}~{\rm g}$ could potentially explain the well-known Galactic 511 keV gamma-ray line if they make up a tiny fraction of the total dark matter density.
