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arXiv · 2207.09968

Primordial black holes from an inflationary potential valley

Bao-Min Gu·Fu-Wen Shu·Ke Yang·Yu-Peng Zhang
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Abstract

Primordial black holes (PBHs) could be formed if large perturbations are generated on small scales in inflation. We study a toy inflation model with a local minimum. The curvature perturbations are enhanced when the inflaton passes through the local minimum, with more efficient amplification rate than that of quasi-inflection point inflation, leading to the production of PBHs on small scales. The PBHs could comprise the total dark matter in the mass window $10^{16}$--$10^{20}$g.

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Bao-Min Gu, Fu-Wen Shu, Ke Yang, Yu-Peng Zhang. 2022-07-20. Primordial black holes from an inflationary potential valley. https://doi.org/10.1103/physrevd.107.023519

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