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arXiv · 1010.3512

Growth factor in f(T) gravity

Rui Zheng·Qing-Guo Huang
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Abstract

We derive the evolution equation of growth factor for the matter over-dense perturbation in $f(T)$ gravity. For instance, we investigate its behavior in power law model at small redshift and compare it to the prediction of $\Lambda$CDM and dark energy with the same equation of state in the framework of Einstein general relativity. We find that the perturbation in $f(T)$ gravity grows slower than that in Einstein general relativity if $\p f/\p T>0$ due to the effectively weakened gravity.

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Rui Zheng, Qing-Guo Huang. 2010-10-18. Growth factor in f(T) gravity. https://doi.org/10.1088/1475-7516/2011/03/002

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