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arXiv · 1804.07124

Primordial Black Holes from Inflation and Quantum Diffusion

Matteo Biagetti·Gabriele Franciolini·Alex Kehagias·Antonio Riotto
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Abstract

Primordial black holes as dark matter may be generated in single-field models of inflation thanks to the enhancement at small scales of the comoving curvature perturbation. This mechanism requires leaving the slow-roll phase to enter a non-attractor phase during which the inflaton travels across a plateau and its velocity drops down exponentially. We argue that quantum diffusion has a significant impact on the primordial black hole mass fraction making the classical standard prediction not trustable.

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Matteo Biagetti, Gabriele Franciolini, Alex Kehagias, Antonio Riotto. 2018-04-19. Primordial Black Holes from Inflation and Quantum Diffusion. https://doi.org/10.1088/1475-7516%2F2018%2F07%2F032

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