Original paper

When the universe expands too fast: relentless dark matter

Volume: 2017, Issue: 05, Pages: 012 - 012
Published: May 4, 2017
Abstract
We consider a modification to the standard cosmological history consisting of introducing a new species ϕ whose energy density red-shifts with the scale factor a like ρϕ ∝ a−(4+n). For 0n>, such a red-shift is faster than radiation, hence the new species dominates the energy budget of the universe at early times while it is completely negligible at late times. If equality with the radiation energy density is achieved at low enough temperatures,...
Paper Details
Title
When the universe expands too fast: relentless dark matter
Published Date
May 4, 2017
Volume
2017
Issue
05
Pages
012 - 012
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