Statefinder diagnostic for the modified polytropic Cardassian universe

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dc.creatorYi, Ze-Long
dc.creatorZhang, Tong-Jie
dc.date2007-03-24
dc.date2007-06-09
dc.date.accessioned2026-07-07T10:21:56Z
dc.date.available2026-07-07T10:21:56Z
dc.descriptionWe 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 $β$ 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.
dc.descriptionComments: Final version for publication in Physical Review D [minor revision to match the appear version] Journal-ref: Physical Review D 75, 083515 (2007)
dc.identifierhttps://arxiv.org/abs/astro-ph/0703630
dc.identifierhttp://arxiv.org/abs/astro-ph/0703630
dc.identifierPhys.Rev.D75:083515,2007
dc.identifierdoi:10.1103/PhysRevD.75.083515
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175341
dc.subjectAstrophysics
dc.titleStatefinder diagnostic for the modified polytropic Cardassian universe
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