Primordial black hole formation in k-inflation models

Bilić, Nevenko; Dimitrijević, Dragoljub D; Djordjević, Goran S; Milošević, Milan; Stojanović, Marko (2025) Primordial black hole formation in k-inflation models. Classical and Quantum Gravity, 42 (23). ISSN 0264-9381

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Abstract

The local primordial density fluctuations caused by quantum vacuum fluctuations during inflation grow into stars and galaxies in the late Universe and, if they are large enough, also produce primordial black holes (BHs). We study the formation of the primordial BHs in k-essence inflation models with a potential characterized by an inflection point. The background and perturbation equations are integrated numerically for two specific models. Using the critical collapse and peaks formalism, we calculate the abundance of primordial BHs today.

Item Type:	Article
Uncontrolled Keywords:	inflation; primordial black holes; k-essence
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Theoretical Physics Division
Depositing User:	Ema Buhin Šaler
Date Deposited:	17 Mar 2026 13:38
URI:	http://fulir.irb.hr/id/eprint/11371
DOI:	10.1088/1361-6382/ae22b4

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