Primordial black holes, which could have been formed in the very early Universe due to the
collapse of large curvature fluctuations, are currently one of the most attractive and …

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We show that the recent NANOGrav result can be interpreted as a stochastic gravitational
wave signal associated to formation of primordial black holes from high-amplitude curvature …

This paper is a biased review of the primordial black hole (PBH) formation and abundance
estimation. We first review the three-zone model for PBH formation to help an intuitive …

The probability of primordial black hole (PBH) formation is known to be boosted during the
Quantum Chromodynamics (QCD) crossover due to a slight reduction of the equation of …

We study the impact of stochastic noise on the generation of primordial black hole (PBH)
seeds in ultra-slow-roll (USR) inflation with numerical simulations. We consider the non …

We resolve the potential-restriction problem in K/G inflation by introducing nonminimal
coupling. In this context, Higgs field successfully drives inflation satisfying cosmic microwave …

With the enhancement mechanism provided by a noncanonical kinetic term with a peak, the
amplitude of primordial curvature perturbations can be enhanced by seven orders of …

Primordial black holes in loop quantum cosmology: the effect on the threshold - IOPscience
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We consider black holes which form from an initially spherically symmetric super-Hubble
perturbation of a cosmological background filled by a perfect fluid p= w ρ with w∊(0, 1] …