论文标题
非球形倒塌原始黑洞形成的阈值
Threshold of Primordial Black Hole Formation in Nonspherical Collapse
论文作者
论文摘要
我们从球体超类扰动开始执行原始黑洞（PBH）形成的原始黑洞（PBH）形成（PBH）的模拟。我们研究了椭圆度（延展性或涂抹）如何根据曲率扰动的峰值幅度影响PBH形成的阈值。我们发现，在辐射主导的宇宙的情况下，椭圆度对阈值的影响对于PBH形成期望的巨大扰动幅度却很小。
We perform (3+1)-dimensional simulations of primordial black hole (PBH) formation starting from the spheroidal super-horizon perturbations. We investigate how the ellipticity (prolateness or oblateness) affects the threshold of PBH formation in terms of the peak amplitude of curvature perturbation. We find that, in the case of the radiation-dominated universe, the effect of ellipticity on the threshold is negligibly small for the large amplitude of perturbations expected for PBH formation.
