Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-24
Phys.Rev.D75:083515,2007
Astronomy and Astrophysics
Astrophysics
Comments: Final version for publication in Physical Review D [minor revision to match the appear version] Journal-ref: Physica
Scientific paper
10.1103/PhysRevD.75.083515
We apply the Statefinder diagnostic to the Modified Polytropic Cardassian Universe in this work. We find that the Statefinder diagnostic is quite effective to distinguish Cardassian models from a series of other cosmological models. The $s-r$ plane is used to classify the Modified Polytropic Cardassian models into six cases. The evolutionary trajectories in the $s-r$ plane for the cases with different $n$ and $\beta$ reveal different evolutionary properties of the universe. In addition, we combine the observational $H(z)$ data, the Cosmic Microwave Background (CMB) data and the Baryonic Acoustic Oscillation (BAO) data to make a joint analysis. We find that \textbf{Case 2} can be excluded at the 68.3% confidence level and any case is consistent with the observations at the 95.4% confidence level.
Yi Ze-Long
Zhang Tong-Jie
No associations
LandOfFree
Statefinder diagnostic for the modified polytropic Cardassian universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Statefinder diagnostic for the modified polytropic Cardassian universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statefinder diagnostic for the modified polytropic Cardassian universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-360530