Primordial black holes as dark matter and gravitational waves from single-field polynomial inflation
Abstract
We consider the possibility that the majority of dark matter in our Universe consists of black holes of primordial origin. We determine the conditions under which such black holes may have originated from a single-field model of inflation characterized by a quartic polynomial potential. We also explore the effect of higher-dimensional operators. The large power spectrum of curvature perturbations that is needed for a large black hole abundance sources sizable second order tensor perturbations. The resulting stochastic background of primordial gravitational waves could be detected by the future space-based observatories LISA and DECIGO or --as long as we give up on the dark matter connection--by the ground-based Advanced LIGO-Virgo detector network.
Keywords
Cite
@article{arxiv.2001.08220,
title = {Primordial black holes as dark matter and gravitational waves from single-field polynomial inflation},
author = {Guillermo Ballesteros and Julián Rey and Marco Taoso and Alfredo Urbano},
journal= {arXiv preprint arXiv:2001.08220},
year = {2020}
}
Comments
28 pages, 13 figures; minor changes, version accepted for publication in JCAP