N ov 2 00 7 Interacting generalized Chaplygin gas model in non - flat universe
نویسنده
چکیده
We employ the generalized Chaplygin gas of interacting dark energy to obtain the equation of state for the generalized Chaplygin gas energy density in non-flat universe. By choosing a negative value for B we see that w ef f Λ < −1, that corresponds to a universe dominated by phantom dark energy.
منابع مشابه
Interacting Modified Variable Chaplygin Gas in a Non-flat Universe
We have presented a more generalized model of interacting Chaplygin gas. The effective equation of states corresponding to matter and dark energy have been derived in this generalized model. Moreover, the case of phantom energy arises by putting some constraints on the parameters involved.
متن کاملar X iv : g r - qc / 0 60 60 30 v 1 7 J un 2 00 6 Chaplygin gas in light of recent integrated Sachs – Wolfe effect data
We investigate the possibility of constraining Chaplygin dark energy models with current Integrated Sachs Wolfe effect data. In the case of a flat universe we found that generalized Chaplygin gas models must have an energy density such that Ωc > 0.55 and an equation of state w < −0.6 at 95% c.l.. We also investigate the recently proposed Silent Chaplygin models, constraining Ωc > 0.55 and w < −...
متن کاملar X iv : g r - qc / 0 61 11 31 v 2 3 0 N ov 2 00 6 Remarks on the Generalized Chaplygin Gas
The recent observation of accelerated expansion of the universe, concluded [1] from the study of luminosity of type Ia distant supernova, has put Cosmology in the center stage. Our inability to explain the origin of this expansion has led to the naming of this phenomenon as ”Dark Energy” effect. The coinage obviously matches the other fuzzy area in Cosmology, i.e. the existence of ”Dark Matter”...
متن کاملar X iv : g r - qc / 0 61 11 31 v 1 2 4 N ov 2 00 6 Remarks on the Generalized Chaplygin Gas
The recent observation of accelerated expansion of the universe, concluded [1] from the study of luminosity of type Ia distant supernova, has put Cosmology in the center stage. Our inability to explain the origin of this expansion has led to the naming of this phenomenon as ”Dark Energy” effect. The coinage obviously matches the other fuzzy area in Cosmology, i.e. the existence of ”Dark Matter”...
متن کاملN ov 2 00 6 Remarks on the Generalized Chaplygin Gas
The recent observation of accelerated expansion of the universe, concluded [1] from the study of luminosity of type Ia distant supernova, has put Cosmology in the center stage. Our inability to explain the origin of this expansion has led to the naming of this phenomenon as ”Dark Energy” effect. The coinage obviously matches the other fuzzy area in Cosmology, i.e. the existence of ”Dark Matter”...
متن کامل