Quintessence Model and Observational Constraints
arXiv:gr-qc/0203007 · doi:10.1088/0264-9381/19/17/305
Abstract
The recent observations of type Ia supernovae strongly support that the universe is accelerating now and decelerated in the recent past. By assuming a general relation between the quintessence potential and the quintessence kinetic energy, a general relation is found between the quintessence energy density and the scale factor. The potential includes both the hyperbolic and the double exponential potentials. A detailed analysis of the transition from the deceleration phase to the acceleration phase is then performed. We show that the current constraints on the transition time, the equation of state and the energy density of the quintessence field are satisfied in the model.
update references,add acknowledgements and correct some errors, accepted for publication in class. and quant. grav
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- Teleparallel quintessence with a nonminimal coupling to a boundary term
- Accelerating universe from gravitational leakage into extra dimensions: confrontation with SNeIa
- Supernova constraints on alternative models to dark energy
- Observational constraints on dark energy model
- Determining the equation of state of dark energy from angular size of compact radio sources and X-ray gas mass fraction of galaxy clusters
- Testing the DGP model with gravitational lensing statistics
- Exact Scaling Solutions in Normal and Brans-Dicke Models of Dark Energy
- Curvature of the universe and the dark energy potential