Why the universal threshold for primordial black hole formation is universal

Kehagias, Alex; Perrone, Davide; Riotto, Antonio Walter

doi:10.1088/1361-6382/adaffc

Scientific article

English

Why the universal threshold for primordial black hole formation is universal

ContributorsKehagias, Alex

; Perrone, Davide

; Riotto, Antonio Walter

Published inClassical and quantum gravity, vol. 42, no. 5, 055010

Publication date2025-03-07

First online date2025-02-13

Abstract

We show why the threshold for primordial black hole formation is universal (independent from the shape of the perturbation) when expressed in terms of the volume averaged compaction function. The proof is rooted in the self-similarity of the gravitational collapse phenomenon at criticality.

Affiliation entities

Faculté des sciences / Section de physique / Département de physique théorique

Funding

Citation (ISO format)

KEHAGIAS, Alex, PERRONE, Davide, RIOTTO, Antonio Walter. Why the universal threshold for primordial black hole formation is universal. In: Classical and quantum gravity, 2025, vol. 42, n° 5, p. 055010. doi: 10.1088/1361-6382/adaffc

Article (Published version)

CC BY-4.0

Identifiers

PID : unige:192555
DOI : 10.1088/1361-6382/adaffc

Additional URL for this publicationhttps://iopscience.iop.org/article/10.1088/1361-6382/adaffc

Journal ISSN0264-9381

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Why the universal threshold for primordial black hole formation is universal

We show why the threshold for primordial black hole formation is universal (independent from the shape of the perturbation) when expressed in terms of the volume averaged compaction function. The proof is rooted in the self-similarity of the gravitational collapse phenomenon at criticality.

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