Check The Plymouth Gold Universe Model

In this master dissertation, under the fundamental frame of general relativity, we describe the evolution of universe by using dynamical methods, particularly studying the model of viscous generalized Chaplygin gas as dark energy.There are four sections in this dissertation as follow.In Section 1, we give dynamical equations by substituting Robertson-Walker metric into Einstein equations.In Section 2, we study the dynamical evolution of universe by the dynamical analysis from Section 1 in the case of GCG as dark energy.In Section 3, if there is viscosity in cosmic fluid, we study how to modify dynamical equations.In final section, based on above review, we study the dynamical evolution of universe in the case of viscous GCG as dark energy.The dissertation gives some interesting results as follow. In the cosmic model of viscous, the equation of state w_g will cross the boundary w_g = -1 because of viscosity.Furthermore, we show that bulk viscosity coefficients should satisfy inequalities fromthe point of view of dynamics.