Interacting two-fluid viscous dark energy models in a non-flat universe
We study the evolution of the dark energy parameter within the scope of a spatially non-flat and isotropic Friedmann-Robertson-Walker model filled with barotropic fluid and bulk viscous stresses. We have obtained cosmological solutions that do not have a Big Rip singularity, and concluded that in bo...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Institute of Physics Publishing
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/30082/1/Interacting%20two.pdf http://psasir.upm.edu.my/id/eprint/30082/ |
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| Summary: | We study the evolution of the dark energy parameter within the scope of a spatially non-flat and isotropic Friedmann-Robertson-Walker model filled with barotropic fluid and bulk viscous stresses. We have obtained cosmological solutions that do not have a Big Rip singularity, and concluded that in both non-interacting and interacting cases the non-flat open Universe crosses the phantom region. We find that during the evolution of the Universe, the equation of state for dark energy ωD changes from ω eff D > -1 to ωeff D < -1, which is consistent with recent observations. |
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