Effects of critical collapse on primordial black-hole mass spectra

  title={Effects of critical collapse on primordial black-hole mass spectra},
  author={Florian K{\"u}hnel and Cornelius Rampf and Marit Sandstad},
  journal={The European Physical Journal C},
Certain inflationary models as well as realisations of phase transitions in the early Universe predict the formation of primordial black holes. For most mass ranges, the fraction of matter in the form of primordial black holes is limited by many different observations on various scales. Primordial black holes are assumed to be formed when overdensities that cross the horizon have Schwarzschild radii larger than the horizon. Traditionally it was therefore assumed that primordial black-hole… 

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