Primordial black holes from fifth forces
Cosmology and Nongalactic Astrophysics
2018-04-25 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
Primordial black holes can be produced by a long range attractive fifth force stronger than gravity, mediated by a light scalar field interacting with nonrelativistic "heavy" particles. As soon as the energy fraction of heavy particles reaches a threshold, the fluctuations rapidly become nonlinear. The overdensities collapse into black holes or similar screened objects, without the need for any particular feature in the spectrum of primordial density fluctuations generated during inflation. We discuss whether such primordial black holes can constitute the total dark matter component in the Universe.
Cite
@article{arxiv.1711.09915,
title = {Primordial black holes from fifth forces},
author = {Luca Amendola and Javier Rubio and Christof Wetterich},
journal= {arXiv preprint arXiv:1711.09915},
year = {2018}
}
Comments
6 pages, 1 figure, published version, added clarifications and references, corrected typos