Phenomenology of Unified Dark Matter models with fast transition
Cosmology and Nongalactic Astrophysics
2014-05-16 v1
Abstract
A fast transition between a standard matter-like era and a late CDM-like epoch generated by a single Unified Dark Matter component can explain the observed acceleration of the Universe. UDM models with a fast transition should be clearly distinguishable from CDM (and alternatives) through observations. Here we focus on a particularly simple model and analyse its viability by studying features of the background model and properties of the adiabatic UDM perturbations.
Keywords
Cite
@article{arxiv.1405.3834,
title = {Phenomenology of Unified Dark Matter models with fast transition},
author = {Alberto Rozas-Fernández and Marco Bruni and Ruth Lazkoz},
journal= {arXiv preprint arXiv:1405.3834},
year = {2014}
}
Comments
4 pages, 1 figure, Proceedings of the Spanish Relativity Meeting ERE2012, University of Minho, Guimar\~aes, Portugal, September 3-7, 2012