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Title: Primordial black holes formation from particle production during inflation

Abstract

We study the possibility that particle production during inflation can source the required power spectrum for dark matter (DM) primordial black holes (PBH) formation. We consider the scalar and the gauge quanta production in inflation models, where in the latter case, we focus in two sectors: inflaton coupled i) directly and ii) gravitationally to a U(1) gauge field. We do not assume any specific potential for the inflaton field. Hence, in the gauge production case, in a model independent way we show that the non-production of DM PBHs puts stronger upper bound on the particle production parameter. Our analysis show that this bound is more stringent than the bounds from the bispectrum and the tensor-to-scalar ratio derived by gauge production in these models. In the scenario where the inflaton field coupled to a scalar field, we put an upper bound on the amplitude of the generated scalar power spectrum by non-production of PBHs. As a by-product we also show that the required scalar power spectrum for PBHs formation is lower when the density perturbations are non-Gaussian in comparison to the Gaussian density perturbations.

Authors:
 [1]
  1. Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), No. 444, Prof. Yousef Sobouti Blvd., Zanjan (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22524884
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 04; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMPLITUDES; BLACK HOLES; COSMOLOGICAL INFLATION; DISTURBANCES; GAUGE INVARIANCE; INFLATIONARY UNIVERSE; INFLATONS; NONLUMINOUS MATTER; PARTICLE PRODUCTION; POTENTIALS; SCALAR FIELDS; SCALARS; SPECTRA; STAR EVOLUTION; TENSORS; U-1 GROUPS

Citation Formats

Erfani, Encieh. Primordial black holes formation from particle production during inflation. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/04/020.
Erfani, Encieh. Primordial black holes formation from particle production during inflation. United States. doi:10.1088/1475-7516/2016/04/020.
Erfani, Encieh. Fri . "Primordial black holes formation from particle production during inflation". United States. doi:10.1088/1475-7516/2016/04/020.
@article{osti_22524884,
title = {Primordial black holes formation from particle production during inflation},
author = {Erfani, Encieh},
abstractNote = {We study the possibility that particle production during inflation can source the required power spectrum for dark matter (DM) primordial black holes (PBH) formation. We consider the scalar and the gauge quanta production in inflation models, where in the latter case, we focus in two sectors: inflaton coupled i) directly and ii) gravitationally to a U(1) gauge field. We do not assume any specific potential for the inflaton field. Hence, in the gauge production case, in a model independent way we show that the non-production of DM PBHs puts stronger upper bound on the particle production parameter. Our analysis show that this bound is more stringent than the bounds from the bispectrum and the tensor-to-scalar ratio derived by gauge production in these models. In the scenario where the inflaton field coupled to a scalar field, we put an upper bound on the amplitude of the generated scalar power spectrum by non-production of PBHs. As a by-product we also show that the required scalar power spectrum for PBHs formation is lower when the density perturbations are non-Gaussian in comparison to the Gaussian density perturbations.},
doi = {10.1088/1475-7516/2016/04/020},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 04,
volume = 2016,
place = {United States},
year = {2016},
month = {4}
}