Primordial black hole constraints for curvaton models with predicted large non-Gaussianity

Primordial black hole constraints for curvaton models with predicted large non-Gaussianity

We consider the early Universe scenario which allows for production of non-Gaussian curvature perturbations at small scales. We study the peculiarities of a formation of primordial black holes (PBHs) connected with the non-Gaussianity. In particular, we show that PBH constraints on the values of cur...

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Veröffentlicht in:arXiv.org 2013-03
Hauptverfasser: Bugaev, E V, Klimai, P A
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Sprache:eng
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Astronomical models
Constraint modelling
Curvature
Mass spectra
Physics - Cosmology and Nongalactic Astrophysics
Physics - High Energy Physics - Phenomenology
Universe
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description We consider the early Universe scenario which allows for production of non-Gaussian curvature perturbations at small scales. We study the peculiarities of a formation of primordial black holes (PBHs) connected with the non-Gaussianity. In particular, we show that PBH constraints on the values of curvature perturbation power spectrum amplitude are strongly dependent on the shape of perturbations and can significantly (by two orders of magnitude) deviate from the usual Gaussian limit \({\cal P}_\zeta \lesssim 10^{-2}\). We give examples of PBH mass spectra calculations and PBH constraints for the particular case of the curvaton model.
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subjects Astronomical models
Constraint modelling
Curvature
Mass spectra
Physics - Cosmology and Nongalactic Astrophysics
Physics - High Energy Physics - Phenomenology
Universe
title Primordial black hole constraints for curvaton models with predicted large non-Gaussianity
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