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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| Format: | Article |
| Language: | English English |
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Springer Link
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/25147/ http://psasir.upm.edu.my/id/eprint/25147/1/An%20interacting%20and%20non.pdf |
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| author | Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin |
| author_facet | Amirhashchi, Hassan Pradhan, Anirudh Zainuddin, Hishamuddin |
| author_sort | Amirhashchi, Hassan |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T08:43:30Z |
| format | Article |
| id | upm-25147 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:43:30Z |
| publishDate | 2011 |
| publisher | Springer Link |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| 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. |
| title | 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_short | 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. |
| url | http://psasir.upm.edu.my/id/eprint/25147/ http://psasir.upm.edu.my/id/eprint/25147/ http://psasir.upm.edu.my/id/eprint/25147/ http://psasir.upm.edu.my/id/eprint/25147/1/An%20interacting%20and%20non.pdf |