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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: Amirhashchi, Hassan, Pradhan, Anirudh, Zainuddin, Hishamuddin
Format: Article
Language:English
English
Published: Institute of Physics Publishing 2013
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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spelling 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
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description 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/
_version_ 1643829952291799040
score 13.214268

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