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Extended Chaplygin gas equation of state with bulk and shear viscosities
Authors:Jalil Naji
Institution:1. Physics Department, Ilam University, P.O. Box 69315-516, Ilam, Iran
Abstract:In this note extended Chaplygin gas equation of state includes bulk and shear viscosities suggested. Bulk viscosity assumed as power law form of density and shear viscosity considered as a constant. We study evolution of dark energy density numerically for several forms of scale factor, and analytically under some assumptions corresponding to early universe. We found our model is stable for infinitesimal viscous parameters.
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