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Cosmological behaviors of the cubic $f(T)$ gravity in early and late universe

Published 18 Oct 2015 in physics.gen-ph and gr-qc | (1511.01445v2)

Abstract: A cubic correction of $f(T)$ gravity, where $T$ is the teleparallel scalar torsion, is considered to describe gravity in spatially flat Friedmann-Robertson-Walker model. A scale factor permitting departure from inflation era has been derived. The cosmological evolution has been studied and it has shown that a phase transition from early era to late one is possible. The maximum temperature by releasing the vacuum latent heat has been shown to be much below the GUT temperature. The energy conditions have been analyzed and has shown that they are satisfied for certain values of the parameters $\varepsilon$ and $\beta$. The cosmographic parameters are used and has been shown that the derived solution satisfies $f(T)$ and its higher derivatives up to fourth order.

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