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Crossing the phantom divide in extended Dvali–Gabadadze–Porrati gravity

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Abstract

We propose a phantom crossing Dvali–Gabadadze–Porrati (DGP) model. In our model, the effective equation of state of the DGP gravity crosses the phantom divide line. We demonstrate crossing of the phantom divide does not occur within the framework of the original DGP model or the DGP model developed by Dvali and Turner. By extending their model, we construct a model that realizes crossing of the phantom divide. We find that the smaller the value of the new introduced parameter β is, the older epoch crossing of the phantom divide occurs in. Our model can account for late-time acceleration of the universe without dark energy. We investigate and show the property of Phantom crossing DGP model.

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Authors and Affiliations

  1. Department of General Education, Ichinoseki National College of Technology, Ichinoseki, 021-8511, Japan

    Koichi Hirano

  2. Department of Physics, Tokyo University of Science, Tokyo, 162-8601, Japan

    Zen Komiya

  3. Shinjuku College of Information Technology, Tokyo, 164-0001, Japan

    Zen Komiya

Authors
  1. Koichi Hirano
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  2. Zen Komiya
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Correspondence to Koichi Hirano.

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Hirano, K., Komiya, Z. Crossing the phantom divide in extended Dvali–Gabadadze–Porrati gravity. Gen Relativ Gravit 42, 2751–2763 (2010). https://doi.org/10.1007/s10714-010-1030-4

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  • DOI: https://doi.org/10.1007/s10714-010-1030-4

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