Extended $\Lambda$CDM model
Cosmology and Nongalactic Astrophysics
2018-10-19 v2
Abstract
In this work we discuss a general approach for the dissipative dark matter considering a nonextensive bulk viscosity and taking into account the role of generalized Friedmann equations. This generalized CDM model encompasses a flat universe with a dissipative nonextensive viscous dark matter component, following the Eckart theory of bulk viscosity. In order to compare models and constrain cosmological parameters, we perform Bayesian analysis using one of the most recent observations of Type Ia Supernova, baryon acoustic oscillations, and cosmic microwave background data.
Cite
@article{arxiv.1809.07797,
title = {Extended $\Lambda$CDM model},
author = {W. J. C. da Silva and H. S. Gimenes and R. Silva},
journal= {arXiv preprint arXiv:1809.07797},
year = {2018}
}
Comments
10 pages, 5 figures, 1 table. Expanded discussion in the Results and Conclusions. Added references