Phantom Crossing DGP Gravity

Journal Article · Thu Aug 12 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3485200· OSTI ID:21426541

Hirano, Koichi ^[1]; Komiya, Zen ^[2]

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1. Department of Physics, Ichinoseki National College of Technology, Ichinoseki 021-8511 (Japan)
2. Department of Physics, Tokyo University of Science, Tokyo 162-8601 (Japan)

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. DGP models can account for late-time acceleration of the universe without dark energy. Phantom Crossing DGP model is more compatible with recent observational data from Type Ia Supernovae (SNIa), Cosmic Microwave Background (CMB) anisotropies, and Baryon Acoustic Oscillations (BAO) than the original DGP model or the DGP model developed by Dvali and Turner.

• OSTI ID: 21426541
• Journal Information: AIP Conference Proceedings, Vol. 1269, Issue 1; Conference: OMEG-2010: 10. international symposium on origin of matter and evolution of galaxies, Osaka (Japan), 8-10 Mar 2010; Other Information: DOI: 10.1063/1.3485200; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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GRAVITATION
MATHEMATICAL MODELS
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