New Holographic Dark Energy Model in Brans-Dicke Theory
We study the cosmic evolution of the Bianchi type I universe by using new holographic dark energy model in the context of the Brans-Dicke theory for both non-interacting and interacting cases between dark energy and dark matter. We evaluate the equation of state for dark energy ω D a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-05-01
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| Series: | Symmetry |
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| Online Access: | http://www.mdpi.com/2073-8994/10/5/153 |
| _version_ | 1798039473526669312 |
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| author | M. Sharif Syed Asif Ali Shah Kazuharu Bamba |
| author_facet | M. Sharif Syed Asif Ali Shah Kazuharu Bamba |
| author_sort | M. Sharif |
| collection | DOAJ |
| description | We study the cosmic evolution of the Bianchi type I universe by using new holographic dark energy model in the context of the Brans-Dicke theory for both non-interacting and interacting cases between dark energy and dark matter. We evaluate the equation of state for dark energy ω D and draw the ω D − ω ˙ D plane, where the dot denotes the time derivative. It is found that a stage in which the cosmic expansion is accelerating can be realized in both cases. In addition, we investigate the stability of the model by analyzing the sound speed. As a result, it is demonstrated that for both cases, the behavior of the sound speed becomes unstable. Furthermore, with the Om-diagnostic tool, it is shown that the quintessence region of the universe can exist. |
| first_indexed | 2024-04-11T21:54:22Z |
| format | Article |
| id | doaj.art-afa0aa9ec9094e11b7ea272fde03a373 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-04-11T21:54:22Z |
| publishDate | 2018-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-afa0aa9ec9094e11b7ea272fde03a3732022-12-22T04:01:10ZengMDPI AGSymmetry2073-89942018-05-0110515310.3390/sym10050153sym10050153New Holographic Dark Energy Model in Brans-Dicke TheoryM. Sharif0Syed Asif Ali Shah1Kazuharu Bamba2Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, PakistanDepartment of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, PakistanDivision of Human Support System, Faculty of Symbiotic Systems Science, Fukushima University, Fukushima 960-1296, JapanWe study the cosmic evolution of the Bianchi type I universe by using new holographic dark energy model in the context of the Brans-Dicke theory for both non-interacting and interacting cases between dark energy and dark matter. We evaluate the equation of state for dark energy ω D and draw the ω D − ω ˙ D plane, where the dot denotes the time derivative. It is found that a stage in which the cosmic expansion is accelerating can be realized in both cases. In addition, we investigate the stability of the model by analyzing the sound speed. As a result, it is demonstrated that for both cases, the behavior of the sound speed becomes unstable. Furthermore, with the Om-diagnostic tool, it is shown that the quintessence region of the universe can exist.http://www.mdpi.com/2073-8994/10/5/153brans-dicke theorydark energy modelcosmological parameters |
| spellingShingle | M. Sharif Syed Asif Ali Shah Kazuharu Bamba New Holographic Dark Energy Model in Brans-Dicke Theory Symmetry brans-dicke theory dark energy model cosmological parameters |
| title | New Holographic Dark Energy Model in Brans-Dicke Theory |
| title_full | New Holographic Dark Energy Model in Brans-Dicke Theory |
| title_fullStr | New Holographic Dark Energy Model in Brans-Dicke Theory |
| title_full_unstemmed | New Holographic Dark Energy Model in Brans-Dicke Theory |
| title_short | New Holographic Dark Energy Model in Brans-Dicke Theory |
| title_sort | new holographic dark energy model in brans dicke theory |
| topic | brans-dicke theory dark energy model cosmological parameters |
| url | http://www.mdpi.com/2073-8994/10/5/153 |
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