Vol 16, No 2

Transient acceleration in f (T ) gravity

Jing-Zhao Qi, Rong-Jia Yang, Ming-Jian Zhang, Wen-Biao Liu


Abstract Recently an f(T) gravity based on the modification of teleparallel gravity was proposed to explain the accelerated expansion of the universe. We use observational data from type Ia supernovae, baryon acoustic oscillations, and cosmic microwave background to constrain this f(T) theory and reconstruct the effective equation of state and the deceleration parameter. We obtain the best-fit values of parameters and find an interesting result that the constrained f(T) theory allows for the accelerated Hubble expansion to be a transient effect.


Keywords f(T) gravity: cosmology — reconstruction — observation

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