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Primordial black hole formation during cosmic phase transitions (2406.11417v1)
Published 17 Jun 2024 in astro-ph.CO
Abstract: Primordial black holes (PBHs) may be part of the dark matter. It is shown here that PBHs form more easily during cosmic phase transitions. For approximately scale-invariant primordial curvature fluctuations the PBH mass function may therefore leave a record of the thermal history of the early Universe. In particular a peak is expected on the 1.9 solar mass scale due to the cosmic QCD transition.
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