A modified Chaplygin gas model with interaction

Details A modified Chaplygin gas model with interaction A modified Chaplygin gas model with interaction

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007gregr..39..653w&link_type=abstract

General Relativity and Gravitation, Volume 39, Issue 5, pp.653-662

Physics

9

Modified Chaplygin Gas(Mcg), Dark Matter, Dark Energy, Statefinder Diagnostic

Scientific paper

A modified Chaplygin gas (MCG) model of unifying dark energy and dark matter is considered in this paper, in which dark energy interacts with dark matter. Concretely, the evolution of such a unified dark sectors model is studied and the statefinder diagnostic to the MCG model is performed in our model. By analysis, it is shown that the effective equation of state (EoS) parameter of dark energy can cross the so-called phantom divide ω = -1, the behavior of MCG will be like ΛCDM in the future and therefore our Universe will not end up with Big Rip in the future. Furthermore, we plot the evolution trajectories of the MCG model in the statefinder parameter r s plane and illustrate the discrimination between this scenario and the generalized Chaplygin gas (GCG) model.

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