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Measuring growth index in a universe with massive neutrinos: A revisit of the general relativity test with the latest observations

Zhang, Jing-Fei; Zhang, Xin; Zhao, Ming-Ming

We make a consistency test for the general relativity (GR) through measuring the growth index γ in a universe with massive (sterile/active) neutrinos. We employ the redshift space distortion measurements to do the analysis. To constrain other cosmological parameters, we also use other cosmological measurements, including the Planck 2015 cosmic mic…