期刊
ASTROPHYSICS AND SPACE SCIENCE
卷 355, 期 2, 页码 399-403出版社
SPRINGER
DOI: 10.1007/s10509-014-2163-9
关键词
Dark energy; Dark matter; Viscous cosmology
资金
- Russian Ministry of Education and Science [TSPU-139]
We investigate cosmological models with two interacting fluids: dark energy and dark matter in flat Friedmann-Robertson-Walker universe. The interaction between dark energy and dark matter is described in terms of the parameters present in the inhomogeneous equation of state when allowance is made for bulk viscosity, for the Little Rip, the Pseudo Rip, and the bounce universes. We obtain analytic representation for characteristic properties in these cosmological models, in particular the bulk viscosity zeta = zeta(H, t) as function of Hubble parameter and time. We discuss the corrections of thermodynamical parameters in the equations of state due coupling between the viscous fluid and dark matter. Some common properties of these corrections are elucidated.
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