Monday, July 22, 2013

1307.5119 (Sayantan Choudhury et al.)

Improved constraints on primordial blackholes and gravitational waves
for a generic model of inflation

Sayantan Choudhury, Anupam Mazumdar
In this article we provide a new closed relationship between the cosmic abundance of primordial gravitational waves and primordial blackholes originated from initial inflationary perturbations for a generic model of inflation where inflation occurs below the Planck scale. We have obtained a strict bound on the current abundance of primordial blackholes from the Planck measurements, $9.99712\times 10^{-3}<\Omega_{PBH}h^{2}< 9.99736\times 10^{-3}$.
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