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Power-law solutions in f (T) gravity

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Abstract

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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Authors and Affiliations

  1. Department of Science, Payame Noor University, Bijar, Iran

    M. R. Setare

  2. Department of Physics, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran

    F. Darabi

  3. Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), 55134-441, Maragha, Iran

    F. Darabi

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  1. M. R. Setare
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  2. F. Darabi
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Correspondence to F. Darabi.

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Setare, M.R., Darabi, F. Power-law solutions in f (T) gravity. Gen Relativ Gravit 44, 2521–2527 (2012). https://doi.org/10.1007/s10714-012-1408-6

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  • DOI: https://doi.org/10.1007/s10714-012-1408-6

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