期刊
ASTROPHYSICS AND SPACE SCIENCE
卷 333, 期 2, 页码 357-368出版社
SPRINGER
DOI: 10.1007/s10509-011-0690-1
关键词
The flat Lambda CDM model; Bulk viscosity; Scale factor; Hubble parameter; Energy density; Deceleration parameter; Statefinder parameters
We explore flat I > CDM models with bulk viscosity, and study the role of the bulk viscosity in the evolution of these universe models. The dynamical equations for these models are obtained and solved for some cases of bulk viscosity. We obtain differential equations for the Hubble parameter H and the energy density of dark matter rho (m) , for which we give analytical solutions for some cases and for the general case we give a numerical solution. Also we calculate the statefinder parameters for these models and display them in the s-r-plane.
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