2017/11/30 by Luca Amendola, Javier Rubio, Christof Wetterich · 1 citation
Physics and Astronomy · #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.97.081302
published as Phys. Rev. D 97, 081302 (2018) · 6 pages, 1 figure, published version, added clarifications and references, corrected typos
arxiv created 2018/04/23 · arxiv updated 2018/04/25
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.