Effect of Varying Bulk Viscosity on Generalized Chaplygin Gas

Understand

In this paper, viscous generalized Chaplygin gas as a model of dark energy considered.

• We assume non-constant bulk viscous coefficient and study dark energy density.
• We consider several cases of density-dependent viscosities.
• We find that, in the special case, the viscous generalized Chaplygin gas is corresponding to modified Chaplygin gas.