论文标题
Kerr原始黑洞的粒子产生中的红移效应
Redshift Effects in Particle Production from Kerr Primordial Black Holes
论文作者
论文摘要
当旋转原始黑洞通过鹰辐射蒸发时，它们的旋转能量和质量会以不同的动态消散。我们研究了这些动力学对黑暗辐射的产生的影响（以热重吸孔或载体玻色子的形式）以及非冷淡的暗物质。尽管在原始黑洞旋转时增强了高旋转颗粒的产生，但我们表明，深色辐射的能量密度会产生额外的红移，因为它们的发射有效地停止了PBH蒸发完成。我们发现，考虑到这种效果，与先前的结果相比，对于最大旋转黑洞的$Δn_ {\ rm eff} $的$ \ mathcal {o}（10）$的抑制。使用Friedmann和Boltzmann方程的溶液准确计算线性扰动的演变，我们重新审视了蒸发产生的光候选者的温暖暗物质约束以及这些限制如何在黑洞旋转上变化。由于产生增强和延迟稀释的相互作用，我们获得了较高的自旋颗粒受这些边界影响最大的影响。我们的代码Frisbhee是早期宇宙中黑洞蒸发的Friedmann求解器，可以在https://github.com/yfperezg/frisbhee上找到。
When rotating primordial black holes evaporate via Hawking radiation, their rotational energy and mass are dissipated with different dynamics. We investigate the effect of these dynamics on the production of dark radiation -- in the form of hot gravitons or vector bosons -- and non-cold dark matter. Although the production of higher-spin particles is enhanced while primordial black holes are rotating, we show that the energy density of dark radiation experiences an extra redshift because their emission effectively halts before PBH evaporation completes. We find that taking this effect into account leads to suppression by a factor of $\mathcal{O}(10)$ of $ΔN_{\rm eff}$ for maximally rotating black holes as compared to previous results. Using the solution of the Friedmann and Boltzmann equations to accurately calculate the evolution of linear perturbations, we revisit the warm dark matter constraints for light candidates produced by evaporation and how these limits vary over black hole spins. Due to the interplay of enhanced production and late dilution, we obtain that higher spin particles are most affected by these bounds. Our code FRISBHEE, FRIedmann Solver for Black Hole Evaporation in the Early universe, developed for this work can be found at https://github.com/yfperezg/frisbhee
