Phantom Crossing DGP Gravity
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. 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.
Cite
@article{arxiv.1004.3872,
title = {Phantom Crossing DGP Gravity},
author = {Koichi Hirano and Zen Komiya},
journal= {arXiv preprint arXiv:1004.3872},
year = {2015}
}
Comments
3 pages, 2 figures, 1 table, To be published in the Proceedings of The 10th. International Symposium on Origin of Matter and Evolution of the Galaxies (OMEG10)