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Indexed by:期刊论文

Date of Publication:2009-11-01

Journal:INTERNATIONAL JOURNAL OF MODERN PHYSICS D

Included Journals:SCIE、Scopus

Volume:18

Issue:11

Page Number:1741-1748

ISSN No.:0218-2718

Key Words:Generalized Chaplygin gas; geometrical diagnostic

Abstract: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.