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论文类型：期刊论文

发表时间：2009-11-01

发表刊物：INTERNATIONAL JOURNAL OF MODERN PHYSICS D

收录刊物：SCIE、Scopus

卷号：18

期号：11

页面范围：1741-1748

ISSN号：0218-2718

关键字：Generalized Chaplygin gas; geometrical diagnostic

摘要：A new diagnostic method, Om, is applied to the generalized Chaplygin gas (GCG) model as the unification of dark matter and dark energy. On the basis of the recently observed data - the Union supernovae, the observational Hubble data, the SDSS baryon acoustic peak and the five-year WMAP shift parameter - we show the discriminations between the GCG model and the Lambda CDM model. Furthermore, it is calculated that the current equation of state of dark energy w(0de) = -0.964, according to the GCG model.