Journal
GENERAL RELATIVITY AND GRAVITATION
Volume 44, Issue 10, Pages 2521-2527Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-012-1408-6
Keywords
Power-law; f(T) gravity; Phantom phase
Funding
- Research Institute for Astronomy and Astrophysics of Maragha (RIAAM) [1/2360]
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We have considered an action of the form T + f (T) + L (m) describing Einstein's gravity plus a function of the torsion scalar. By considering an exact power-law solution we have obtained the Friedmann equation as a differential equation for the function f (T) in spatially flat universe and obtained the real valued solutions of this equation for some power-law solutions. We have also studied the power-law solutions when the universe enters a Phantom phase and shown that such solutions may exist for some f (T) solutions.
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