Primordial black hole production during preheating in a chaotic inflationary model

Torres-Lomas, E.; Ureña–López, L. Arturo

doi:10.1063/1.4817051

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…During this oscillatory phase, resonant amplification of matter and metric perturbations take place [54,55] leading in this way to amplified curvature perturbations which in their turn collapse and form PBHs. Historically, PBHs emanated from the preheating instability were proposed in the context of multi-field inflation and in particular in the context of two-field chaotic inflation [224,225,226,227] and more recently in [228,229] since in this case the parametric amplification of entropy/isocurvature fluctuations can source the parametric amplification of the adiabatic/curvature fluctuations in the regime of broad resonance. In the context of single-field inflation, it is predicted as well [222] [see also [223]] that a pronounced resonant instability structure in the narrow regime this time can amplify metric perturbations inducing in this way the production of PBHs as recently studied in our research work [30].…”

Section: Pbhs From the Preheating Instabilitymentioning

confidence: 99%

Primordial black holes from the preheating instability in single-field inflation

Martin

Papanikolaou

Vennin

2020

J. Cosmol. Astropart. Phys.

127

121

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After the end of inflation, the inflaton field oscillates around a local minimum of its potential and decays into ordinary matter. These oscillations trigger a resonant instability for cosmological perturbations with wavelengths that exit the Hubble radius close to the end of inflation. In this paper, we study the formation of Primordial Black Holes (PBHs) at these enhanced scales. We find that the production mechanism can be so efficient that PBHs subsequently dominate the content of the universe and reheating proceeds from their evaporation. Observational constraints on the PBH abundance also restrict the duration of the resonant instability phase, leading to tight limits on the reheating temperature that we derive. We conclude that the production of PBHs during reheating is a generic and inevitable property of the simplest inflationary models, and does not require any fine tuning of the inflationary potential.

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Section: Pbhs From the Preheating Instabilitymentioning

confidence: 99%

Primordial black holes from the preheating instability in single-field inflation

Martin

Papanikolaou

Vennin

2020

J. Cosmol. Astropart. Phys.

127

121

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“…In particular we will test for PBH formation considering two values of g 2 commonly used in preheating studies: case I takes g 2 = 6.5 × 10 −8 , and in case II, we consider g 2 = 2.5 × 10 −7 (more details of the simulations can be found in Refs. [5,8,9]).…”

Section: Preheating Modelmentioning

confidence: 99%

Formation of subhorizon black holes from preheating

et al. 2014

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We study the production of primordial black holes (PBHs) during the preheating stage that follows a chaotic inflationary phase. The scalar fields present in the process are evolved numerically using a modified version of the HLATTICE code. From the output of the numerical simulation, we compute the probability distribution of curvature fluctuations, paying particular attention to sub-horizon scales. We find that in some specific models these modes grow to large amplitudes developing highly non-Gaussian probability distributions. We then calculate PBH abundances using the standard Press-Schechter criterion and find that overproduction of PBHs is likely in some regions of the chaotic preheating parameter space.PACS numbers: 95.30Cq, 95.30.Tg, 98.80.Cq,97.60.Lf

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Primordial black hole formation during slow-reheating: a review

Padilla,

Hidalgo,

Gomez-Aguilar

et al. 2024

Front. Astron. Space Sci.

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In this paper we review the possible mechanisms for the production of primordial black holes (PBHs) during a slow-reheating period in which the energy transfer of the inflaton field to standard model particles becomes effective at slow temperatures, offering a comprehensive examination of the theoretical foundations and conditions required for each of formation channel. In particular, we focus on post-inflationary scenarios where there are no self-resonances and the reheating epoch can be described by the inflaton evolving in a quadratic-like potential. In the hydrodynamical interpretation of this field during the slow-reheating epoch, the gravitational collapse of primordial fluctuations is subject to conditions on their sphericity, limits on their spin, as well as a maximum velocity dispersion. We show how to account for all conditions and show that PBHs form with different masses depending on the collapse mechanism. Finally we show, through an example, how PBH production serves to probe both the physics after primordial inflation, as well as the primordial powerspectrum at the smallest scales.

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Primordial black hole production during preheating in a chaotic inflationary model

Cited by 3 publications

References 24 publications

Primordial black holes from the preheating instability in single-field inflation

Primordial black holes from the preheating instability in single-field inflation

Formation of subhorizon black holes from preheating

Primordial black hole formation during slow-reheating: a review

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