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arXiv · 1204.2333

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

Xiangyun Fu·Puxun Wu·Hongwei Yu
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Abstract

In this paper, we study the growth index of matter density perturbations for the power law model in $f(T)$ gravity. Using the parametrization $γ(z)=γ_0+γ_1 {z\over 1+z}$ for the growth index, which approximates the real evolution of $γ(z)$ very well, and the observational data of the growth factor, we find that, at $1σ$ confidence level, the power law model in $f(T)$ gravity is consistent with the observations, since the obtained theoretical values of $γ_0$ and $γ_1$ are in the allowed region.

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Xiangyun Fu, Puxun Wu, Hongwei Yu. 2012-04-11. The growth of matter perturbations in the f(T) gravity. https://doi.org/10.1142/s0218271811019372

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