Primordial black hole abundance in non-Gaussian inflation models

Journal Article · Thu Dec 15 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.124004· OSTI ID:20774525

Avelino, Pedro P ^[1]

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1. Centro de Fisica do Porto e Departamento de Fisica da Faculdade de Ciencias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto (Portugal)

We determine the abundance of primordial black holes (PBHs) formed in the context of non-Gaussian models with primordial density perturbations. We consider models with a renormalized {chi}{sup 2} probability distribution function parametrized by the number, {nu}, of degrees of freedom. We show that if {nu} is not too large then the PBH abundance will be altered by several orders of magnitude with respect to the standard Gaussian result obtained in the {nu}{yields}{infinity} limit. We also study the dependence of the spectral index constraints on the nature of the cosmological perturbations for a power-law primordial power spectrum.

• OSTI ID: 20774525
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 12; Other Information: DOI: 10.1103/PhysRevD.72.124004; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ABUNDANCE
BLACK HOLES
COSMOLOGY
DEGREES OF FREEDOM
DENSITY
DISTRIBUTION FUNCTIONS
DISTURBANCES
ENERGY SPECTRA
PROBABILITY
RENORMALIZATION