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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2013
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my.upm.eprints.300822015-09-08T01:24:04Z http://psasir.upm.edu.my/id/eprint/30082/ Interacting two-fluid viscous dark energy models in a non-flat universe Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin 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. Institute of Physics Publishing 2013-02 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/30082/1/Interacting%20two.pdf Amirhashchi, Hassan and Pradhan, Anirudh and Zainuddin, Hishamuddin (2013) Interacting two-fluid viscous dark energy models in a non-flat universe. Research in Astronomy and Astrophysic, 13 (2). pp. 129-138. ISSN 1674-4527 10.1088/1674-4527/13/2/001 English |
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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. |
format |
Article |
author |
Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin |
spellingShingle |
Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin Interacting two-fluid viscous dark energy models in a non-flat universe |
author_facet |
Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin |
author_sort |
Amirhashchi, Hassan |
title |
Interacting two-fluid viscous dark energy models in a non-flat universe |
title_short |
Interacting two-fluid viscous dark energy models in a non-flat universe |
title_full |
Interacting two-fluid viscous dark energy models in a non-flat universe |
title_fullStr |
Interacting two-fluid viscous dark energy models in a non-flat universe |
title_full_unstemmed |
Interacting two-fluid viscous dark energy models in a non-flat universe |
title_sort |
interacting two-fluid viscous dark energy models in a non-flat universe |
publisher |
Institute of Physics Publishing |
publishDate |
2013 |
url |
http://psasir.upm.edu.my/id/eprint/30082/1/Interacting%20two.pdf http://psasir.upm.edu.my/id/eprint/30082/ |
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