论文标题
黑暗宇宙：原始黑洞$ \ leftrightharpoons $ Dark Graviton气体连接
The Dark Universe: Primordial Black Hole $\leftrightharpoons$ Dark Graviton Gas Connection
论文作者
论文摘要
我们将5维原始的黑洞与大量5维KK Gractons作为暗物质候选者之间的可能对应关系，这是解决宇宙学层次结构问题的最近提议的暗尺寸场景。首先，我们表明，在本地宇宙中，有$ m _ {\ rm bh} \ sim 7 \ sim 7 \ sim 10^{13}〜{\ rm g} $的5维黑孔的人口实际上与$ M _ {\ rm Dm dm dm dm dm dm dm dm dm} $ 50的KK塔的kk塔实际上是无法区分的。其次，我们将5维黑孔的质量增加以及相关温度随着重力的大量自旋2 KK激发的冷却而降低。深色重力以质量$ \ sim 1-50〜 {\ rm gev} $产生，其大部分质量转移到了大约$ 1-100〜 {\ rm kev} $今天。系统的冷却是通过腐烂到较轻的重力进行的，而不会失去太多的总质量密度，这类似于动态暗物质框架宇宙学演变的the内衰减。我们将重力气体的内部衰减与通过积聚的黑洞生长相关联。我们还讨论了原始的黑洞$ \ leftrightharpoons $ Dark Graviton气体连接可以通过Gravitons的黑洞的界限很好地解释。
We study the possible correspondence between 5-dimensional primordial black holes and massive 5-dimensional KK gravitons as dark matter candidate within the recently proposed dark dimension scenario that addresses the cosmological hierarchy problem. First, we show that in the local universe a population of 5-dimensional black holes with $M_{\rm BH}\sim 7\times 10^{13}~{\rm g}$ would be practically indistinguishable from a KK tower of dark gravitons with $m_{\rm DM} \sim 50~{\rm keV}$. Second, we connect the mass increase of 5-dimensional black holes and the related temperature decrease with the cooling of the tower of massive spin-2 KK excitations of the graviton. The dark gravitons are produced at a mass $\sim 1 - 50~{\rm GeV}$ and the bulk of their mass shifts down to roughly $1 - 100~{\rm keV}$ today. The cooling of the system proceeds via decay to lighter gravitons without losing much total mass density, resembling the intra-tower decays that characterize the cosmological evolution of the dynamical dark matter framework. We associate the intra-tower decays of the graviton gas with the black hole growth through accretion. We also discuss that the primordial black hole $\leftrightharpoons$ dark graviton gas connection can be nicely explained by the bound state picture of black holes in terms of gravitons.
