Cosmological joint analysis with cosmic growth and expansion rate
  The measurements of expansion rate $H(z)$ and the growth rate $f\sigma_8(z)$
describe the evolution of the universe, and both of them can constrain the
cosmological models through data analysis. Due to the lack of data points,
combining those datasets through the traditional combined method ($\chi^2$
method) to select a best-fitting cosmological model. In 2017, Linder proposed a
joint method, which describes the evolution of the universe through
$H(z)-f\sigma_8$ diagram instead of the redshift z. And Linder showed the
advantages of distinguishing cosmologies of the joint method compared to the
individual dataset. In this paper, we compare the significance between the
traditional combined method and Linder's joint method by constraining the
density parameter $\Omega_M$ using Akaike Information Criterion (AIC) and
Bayesian Information Criterion (BIC). The result shows that the joint method is
more significant than the traditional combined method.
