models with phantom divide line crossing
arXiv:1008.3669 · doi:10.1140/epjc/s10052-011-1552-2
Abstract
In this paper, we propose two new models in gravity to realize the crossing of the phantom divide line for the effective equation of state, and we then study the observational constraints on the model parameters. The best fit results suggest that the observations favor a crossing of the phantom divide line.
12 pages, 4 figures, equations corrected
References in corpus (18)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
- Dark torsion as the cosmic speed-up
- Modified teleparallel gravity: inflation without inflaton
- Einstein's Other Gravity and the Acceleration of the Universe
- Cosmological Evolution of a Quintom Model of Dark Energy
- On Born-Infeld Gravity in Weitzenbock spacetime
- Observational constraints on theory
- Reconstruction of the deceleration parameter and the equation of state of dark energy
- Cosmic Duality in Quintom Universe
- Cosmological evolution in exponential gravity
- Avoidance of Big Rip In Phantom Cosmology by Gravitational Back Reaction
- Internal space structure generalization of the quintom cosmological scenario
- Reconstruction of Hessence Dark Energy and the Latest Type Ia Supernovae Gold Dataset
- Attractor solutions for general hessence dark energy
- Constraints on a variable dark energy model with recent observations
- Background cosmological dynamics in gravity and observational constraints
- Can universe exit from phantom inflation due to gravitational back reaction?