The growth of matter perturbations in the f(T) gravity

Xiangyun Fu, Puxun Wu, Hongwei Yu

In this paper, we study the growth index of matter density perturbations for the power law model in $f(T)$ gravity. Using the parametrization $\gamma (z)={\gamma }_0+{\gamma }_1\frac{z}{1+z}$ for the gr…