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Formation of primordial black holes from non-Gaussian perturbations produced in a waterfall transition

2011/12/31 by É. V. Bugaev, Edgar Bugaev, Peter Klimai · 4 citations
Mathematics · Physics and Astronomy · #Amplitude #Astrophysics #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology and Gravitation Theories #Curvature #Galaxies: Formation, Evolution, Phenomena #Geometry #Gravitational wave #Inflation (cosmology) #Instability #Mathematics #Non-Gaussianity #Perturbation (astronomy) #Physics #Primordial black hole #Primordial fluctuations #Quantum mechanics #Theoretical physics #Waterfall #astro-ph.CO #hep-ph

paper · pdf · doi:10.1103/physrevd.85.103504

published as Phys.Rev.D85:103504,2012 · v2: 11 pages, 4 figures. Several comments and references added. Version accepted by Phys. Rev. D

arxiv created 2012/04/12 · openalex publication_date 2012/05/07 · arxiv updated 2012/05/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We consider the process of primordial black hole (PBH) formation originated from primordial curvature perturbations produced during waterfall transition (with tachyonic instability), at the end of hybrid inflation. It is known that in such inflation models, rather large values of curvature perturbation amplitudes can be reached, which can potentially cause a significant PBH production in the early Universe. The probability distributions of density perturbation amplitudes in this case can be strongly non-Gaussian, which requires a special treatment. We calculated PBH abundances and PBH mass spectra for the model and analyzed their dependence on model parameters. We obtained the constraints on the parameters of the inflationary potential, using the available limits on \ensuremathβPBH.

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