Cosmological constrains on fast transition Unified Dark Matter models
Lazcoz Sáez, Ruth
Leanizbarrutia Alonso, Iker
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Journal of Physics Conference Series 600 2015 : (2015) // Article ID 012028
In this work we show the results obtained applying a Unified Dark Matter (UDM) model with a fast transition to a set of cosmological data. Two different functions to model the transition are tested, and the feasibility of both models is explored using CMB shift data from Planck , Galaxy Clustering data from  and , and Union2.1 SNe Ia . These new models are also statistically compared with the ACDM and quiessence models using Bayes factor through evidence. Bayesian inference does not discard the UDM models in favor of ACDM.