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An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.

We study the evolution of the dark energy parameter in a spatially homogeneous and isotropic FRW space-time filled with barotropic fluid and dark energy by considering a time dependent deceleration parameter. Two cases are discussed when the dark energy is minimally coupled to the perfect fluid as w...

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Main Authors: Amirhashchi, Hassan, Pradhan, Anirudh, Zainuddin, Hishamuddin
Format: Article
Language:English
English
Published: Springer Link 2011
Online Access:http://psasir.upm.edu.my/id/eprint/25147/1/An%20interacting%20and%20non.pdf
http://psasir.upm.edu.my/id/eprint/25147/
http://link.springer.com/
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spelling my.upm.eprints.251472015-09-29T06:17:39Z http://psasir.upm.edu.my/id/eprint/25147/ An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter. Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin We study the evolution of the dark energy parameter in a spatially homogeneous and isotropic FRW space-time filled with barotropic fluid and dark energy by considering a time dependent deceleration parameter. Two cases are discussed when the dark energy is minimally coupled to the perfect fluid as well as direct interaction with it. It is concluded that in both non-interacting and interacting cases only open and flat universes cross the phantom region. We find that during the evolution of the universe, the equation of state (EoS) for dark energy ω D changes from ω D >−1 to ω D <−1, which is consistent with recent observations. The cosmic jerk parameter in our derived models is also found to be in good agreement with the recent data of astrophysical observations. Springer Link 2011-11 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25147/1/An%20interacting%20and%20non.pdf Amirhashchi, Hassan and Pradhan, Anirudh and Zainuddin, Hishamuddin (2011) An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter. International Journal of Theoretical Physics, 50 (11). pp. 3529-3543. ISSN 0020-7748 http://link.springer.com/ 10.1007/s10773-011-0861-4 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 in a spatially homogeneous and isotropic FRW space-time filled with barotropic fluid and dark energy by considering a time dependent deceleration parameter. Two cases are discussed when the dark energy is minimally coupled to the perfect fluid as well as direct interaction with it. It is concluded that in both non-interacting and interacting cases only open and flat universes cross the phantom region. We find that during the evolution of the universe, the equation of state (EoS) for dark energy ω D changes from ω D >−1 to ω D <−1, which is consistent with recent observations. The cosmic jerk parameter in our derived models is also found to be in good agreement with the recent data of astrophysical observations.
format Article
author Amirhashchi, Hassan
Pradhan, Anirudh
Zainuddin, Hishamuddin
spellingShingle Amirhashchi, Hassan
Pradhan, Anirudh
Zainuddin, Hishamuddin
An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.
author_facet Amirhashchi, Hassan
Pradhan, Anirudh
Zainuddin, Hishamuddin
author_sort Amirhashchi, Hassan
title An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.
title_short An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.
title_full An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.
title_fullStr An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.
title_full_unstemmed An interacting and non-interacting two-fluid dark energy models in FRW universe with time dependent deceleration parameter.
title_sort interacting and non-interacting two-fluid dark energy models in frw universe with time dependent deceleration parameter.
publisher Springer Link
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/25147/1/An%20interacting%20and%20non.pdf
http://psasir.upm.edu.my/id/eprint/25147/
http://link.springer.com/
_version_ 1643828574068670464
score 13.244413

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