Phenomenology of Unified Dark Matter models with fast transition

Alberto Rozas-Fernández; Marco Bruni; Ruth Lazkoz

doi:10.1007/978-3-642-40157-2_58

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arXiv · 1405.3834

Phenomenology of Unified Dark Matter models with fast transition

Alberto Rozas-Fernández·Marco Bruni·Ruth Lazkoz

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Abstract

A fast transition between a standard matter-like era and a late $\Lambda$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 $\Lambda$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.

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Alberto Rozas-Fernández, Marco Bruni, Ruth Lazkoz. 2014-05-15. Phenomenology of Unified Dark Matter models with fast transition. https://doi.org/10.1007/978-3-642-40157-2_58

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