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论文类型：期刊论文

发表时间：2007-08-01

发表刊物：CHINESE PHYSICS LETTERS

收录刊物：SCIE、ISTIC、Scopus

卷号：24

期号：8

页面范围：2459-2462

ISSN号：0256-307X

摘要：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.