# Near-Critical Gravitational Collapse and the Initial Mass Function of Primordial Black Holes

@article{Niemeyer1998NearCriticalGC, title={Near-Critical Gravitational Collapse and the Initial Mass Function of Primordial Black Holes}, author={Jens C. Niemeyer and Karsten Jedamzik}, journal={Physical Review Letters}, year={1998}, volume={80}, pages={5481-5484} }

The recent discovery of critical phenomena arising in gravitational collapse near the threshold of black-hole formation is used to estimate the initial mass function of primordial black holes (PBHs). It is argued that the scaling relation between black-hole mass and initial perturbation found for a collapsing radiation fluid in an asymptotically flat space-time also applies to PBH formation in a Friedmann universe. Owing to the natural fine tuning of initial conditions by the exponential…

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