Evolution of a simple inhomogeneous anisotropic cosmological model with diffusion
作者： Dmitry Shogin , Sigbjørn Hervik
DOI: 10.1088/1475-7516/2013/10/005
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摘要: We investigate a simple inhomogeneous anisotropic cosmology (plane symmetric G2 model) filled with tilted perfect fluid undergoing velocity diffusion on scalar field. Considered are two types of fluid: dust and radiation. solve the system Einstein field equations numerically demonstrate how universe evolves towards its future asymptotic state. Also, typical time scales characteristic processes determined. The obtained results for dust- radiation-filled cosmologies compared to each other those in diffusionless case, giving hint which effects can be result including more complicated models. For example, causes accelerated expansion stage arrive at later times.
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