학술논문
The Primordial Black Hole Abundance: The Broader, the Better
Document Type
Working Paper
Author
Source
Phys. Rev. D 109, 123549 Published 28 June 2024
Subject
Language
Abstract
We show that the abundance of primordial black holes, if formed through the collapse of large fluctuations generated during inflation and unless the power spectrum of the curvature perturbation is very peaked, is always dominated by the broadest profile of the compaction function, even though statistically it is not the most frequent. The corresponding threshold is therefore 2/5. This result exacerbates the tension when combining the primordial black hole abundance with the signal seen by pulsar timing arrays and originated from gravitational waves induced by the same large primordial perturbations.
Comment: V2, Published version on PRD. Minor changes respect V1
Comment: V2, Published version on PRD. Minor changes respect V1