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arXiv · 1307.5119

Primordial blackholes and gravitational waves for an inflection-point model of inflation

Sayantan Choudhury·Anupam Mazumdar
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Abstract

In this article we provide a new closed relationship between cosmic abundance of primordial gravitational waves and primordial blackholes originated from initial inflationary perturbations for inflection-point models of inflation where inflation occurs below the Planck scale. The current Planck constraint on tensor-to-scalar ratio, running of the spectral tilt, and from the abundance of dark matter content in the universe, we can deduce a strict bound on the current abundance of primordial blackholes to be within a range, $9.99712\times 10^{-3}<Ω_{PBH}h^{2}<9.99736\times 10^{-3}$.

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Sayantan Choudhury, Anupam Mazumdar. 2014-04-27. Primordial blackholes and gravitational waves for an inflection-point model of inflation. https://doi.org/10.1016/j.physletb.2014.04.050

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