A test of the standard dark matter density evolution law using galaxy clusters and cosmic chronometers

Abstract

In this letter, we implement a test of the standard law for the dark matter density evolution. For this purpose, only a flat universe and the validity of the FRW metric are assumed. A deformed dark matter density evolution law is considered, given by ${\rho }_c(z)\propto (1+z{)}^{3+\epsilon }$, and constraints on $\epsilon$ are obtained by using galaxy cluster gas mass fractions, and cosmic chronometers measurements. We find that $\epsilon =0$ within 2$\sigma$ c.l., in full agreement with other recent analyses.

arXiv comment7 Pages, 3 figures, and Accepted for publication in EPJC

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