Phantom Crossing DGP Gravity

Journal Article · Thu Aug 12 04:00:00 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1269; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
ACCELERATION
ANISOTROPY
BARYONS
BINARY STARS
COSMOLOGY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
ERUPTIVE VARIABLE STARS
FERMIONS
GRAVITATION
HADRONS
MATHEMATICAL MODELS
MATTER
MICROWAVE RADIATION
NONLUMINOUS MATTER
OSCILLATIONS
RADIATIONS
RELICT RADIATION
STARS
SUPERNOVAE
UNIVERSE
VARIABLE STARS