Constraints on the primordial curvature perturbation from primordial black holes
نویسندگان
چکیده
منابع مشابه
Constraints on the primordial curvature perturbation from primordial black holes
We calculate the constraints on the primordial curvature perturbation at the end of inflation from the present day abundance of Primordial Black Holes (PBHs), as a function of the reheat temperature TRH. We first extend recent work on the formation of PBHs on scales which remain within the horizon during inflation and calculate the resulting constraints on the curvature perturbation. We then ev...
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The amount of late decaying massive particles (e.g., gravitinos, moduli) produced in the evaporation of primordial black holes (PBHs) of mass MBH <∼ 10 9 g is calculated. Limits imposed by big-bang nucleosynthesis on the abundance of these particles are used to constrain the initial PBH mass fraction β (ratio of PBH energy density to critical energy density at formation), as: β <∼ 5× 10 (xφ/6 1...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2007
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2007/03/010