The formation probability of primordial black holes

The formation probability of primordial black holes

We calculate the formation probability of primordial black holes generated during the collapse at horizon re-entry of large fluctuations produced during inflation, such as those ascribed to a period of ultra-slow-roll. We show that it interpolates between a Gaussian at small values of the average de...

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Main Authors: Matteo Biagetti, Valerio De Luca, Gabriele Franciolini, Alex Kehagias, Antonio Riotto
Format: Article
Language:English
Published: Elsevier 2021-09-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321005426
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spelling doaj-4fc039e556be46c7817a9a8fa197fa7c2021-10-09T04:36:41ZengElsevierPhysics Letters B0370-26932021-09-01820136602The formation probability of primordial black holesMatteo Biagetti0Valerio De Luca1Gabriele Franciolini2Alex Kehagias3Antonio Riotto4Institute for Fundamental Physics of the Universe, Via Beirut 2, 34151 Trieste, Italy; SISSA - International School for Advanced Studies, Via Bonomea 265, 34136 Trieste, Italy; Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Trieste, via Tiepolo 11, 34143 Trieste, Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, via Valerio 2, 34127 Trieste, Italy; Corresponding authors.Département de Physique Théorique and Centre for Astroparticle Physics (CAP), Université de Genève, 24 quai E. Ansermet, CH-1211 Geneva, Switzerland; Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Roma, Italy; Corresponding authors.Département de Physique Théorique and Centre for Astroparticle Physics (CAP), Université de Genève, 24 quai E. Ansermet, CH-1211 Geneva, Switzerland; Corresponding authors.Physics Division, National Technical University of Athens, 15780 Zografou Campus, Athens, Greece; Corresponding authors.Département de Physique Théorique and Centre for Astroparticle Physics (CAP), Université de Genève, 24 quai E. Ansermet, CH-1211 Geneva, Switzerland; Corresponding authors.We calculate the formation probability of primordial black holes generated during the collapse at horizon re-entry of large fluctuations produced during inflation, such as those ascribed to a period of ultra-slow-roll. We show that it interpolates between a Gaussian at small values of the average density contrast and a Cauchy probability distribution at large values. The corresponding abundance of primordial black holes may be larger than the Gaussian one by several orders of magnitude. The mass function is also shifted towards larger masses.http://www.sciencedirect.com/science/article/pii/S0370269321005426
collection DOAJ
language English
format Article
sources DOAJ
author Matteo Biagetti
Valerio De Luca
Gabriele Franciolini
Alex Kehagias
Antonio Riotto
spellingShingle Matteo Biagetti
Valerio De Luca
Gabriele Franciolini
Alex Kehagias
Antonio Riotto
The formation probability of primordial black holes
Physics Letters B
author_facet Matteo Biagetti
Valerio De Luca
Gabriele Franciolini
Alex Kehagias
Antonio Riotto
author_sort Matteo Biagetti
title The formation probability of primordial black holes
title_short The formation probability of primordial black holes
title_full The formation probability of primordial black holes
title_fullStr The formation probability of primordial black holes
title_full_unstemmed The formation probability of primordial black holes
title_sort formation probability of primordial black holes
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2021-09-01
description We calculate the formation probability of primordial black holes generated during the collapse at horizon re-entry of large fluctuations produced during inflation, such as those ascribed to a period of ultra-slow-roll. We show that it interpolates between a Gaussian at small values of the average density contrast and a Cauchy probability distribution at large values. The corresponding abundance of primordial black holes may be larger than the Gaussian one by several orders of magnitude. The mass function is also shifted towards larger masses.
url http://www.sciencedirect.com/science/article/pii/S0370269321005426
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