Université de GenèveDépartement de Physique ThéoriqueCAP Genève

Primordial Black Holes from Inflation and Quantum Diffusion

Date: 
19. April 2018
Cite as: 
M. Biagetti, G. Franciolini, A. Kehagias, A. Riotto [arXiv:1804.07124].
Summary: 

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.

Address

Département de Physique Théorique
Université de Genève
24, quai Ernest Ansermet
1211 Genève 4
Switzerland
Directions & contact