publication . Article . Other literature type . 2018

Concentrated dark matter: Enhanced small-scale structure from codecaying dark matter

Jeff A. Dror; Eric Kuflik; Brandon Melcher; Scott Watson;
Open Access
  • Published: 22 Mar 2018
  • Publisher: eScholarship, University of California
  • Country: United States
Abstract
Author(s): Dror, JA; Kuflik, E; Melcher, B; Watson, S | Abstract: © 2018 authors. Published by the American Physical Society. We study the cosmological consequences of codecaying dark matter - a recently proposed mechanism for depleting the density of dark matter through the decay of nearly degenerate particles. A generic prediction of this framework is an early dark matter dominated phase in the history of the Universe, that results in the enhanced growth of dark matter perturbations on small scales. We compute the duration of the early matter dominated phase and show that the perturbations are robust against washout from free streaming. The enhanced small-scal...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: hep-ph, astro-ph.CO, hep-th, Physics and Astronomy (miscellaneous), Universe, media_common.quotation_subject, media_common, Hot dark matter, Warm dark matter, Physics, Halo, Free streaming, Astrophysics, Fermi Gamma-ray Space Telescope, Dark matter, Mixed dark matter
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