Formation of primordial black holes after Starobinsky inflation
Formation of primordial black holes after Starobinsky inflation
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DOI：
10.1142/s0217732322501358
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发表时间：
2022-05
影响因子：
1.4
通讯作者：
Daniel Frolovsky;S. Ketov;S. Saburov
中科院分区：
文献类型：
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作者：
Daniel Frolovsky;S. Ketov;S. Saburov
在这篇文章中，我们采用了Appleby-Battye-Starobinsky的[公式：参阅文本]引力模型，以描述单场模型中质量高达[公式：参见文本]g的双重宇宙膨胀和原始黑洞的形成。我们发现，有可能将标量曲率扰动的功率谱增强到超出[公式：参见文本]g的Hawking(黑洞蒸发)极限的水平，这样，由于这些大的原始扰动的引力坍塌而产生的原始黑洞可以在现在的宇宙中存活下来，并形成冷暗物质的一部分。我们的结果与目前在[公式：见正文]内对宇宙微波背景辐射的测量结果一致，但需要对参数进行微调。
In this paper, we adapted the Appleby–Battye–Starobinsky model of [Formula: see text] gravity towards describing double cosmological inflation and formation of primordial black holes with masses up to [Formula: see text] g in the single-field model. We found that it is possible to get an enhancement of the power spectrum of scalar curvature perturbations to the level beyond the Hawking (black hole evaporation) limit of [Formula: see text] g, so that the primordial black holes resulting from gravitational collapse of those large primordial perturbations can survive in the present universe and form part of cold dark matter. Our results agree with the current measurements of cosmic microwave background radiation within [Formula: see text] but require fine-tuning of the parameters.