Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2009-11-01

Journal: INTERNATIONAL JOURNAL OF MODERN PHYSICS D

Included Journals: Scopus、SCIE

Volume: 18

Issue: 11

Page Number: 1741-1748

ISSN: 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.