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Indexed by:期刊论文

Date of Publication:2007-08-01

Journal:CHINESE PHYSICS LETTERS

Included Journals:SCIE、ISTIC、Scopus

Volume:24

Issue:8

Page Number:2459-2462

ISSN No.:0256-307X

Abstract:Selection statics of the Akaike information criterion (AIC) model and the Bayesian information criterion (BIC) model are applied to the Lambda-cold dark matter (Lambda CDM) cosmological model, the constant equation of state of dark energy, w = constant, and the parametrized equation of state of dark energy, w(z) = w(0) + w(1)z/(1+z), to determine which one is the better cosmological model to describe the evolution of the universe by combining the recent cosmic observational data including Sne Is, the size of baryonich acoustic oscillation (BAO) peak from SDSS, the tree-year WMAP CMB shift parameter. The results show that AIC, BIC and current datasets are not powerful enough to discriminate one model from the others, though odds suggest differences between them.