Analysis of dark energy models in DGP braneworld
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- 作者：Abdul Jawad
- 关键词：DGP braneworld framework ; Pilgrim dark energy ; Cold dark matter ; Cosmological parameters
- 刊名：Astrophysics and Space Science
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：360
- 期：2
- 全文大小：1,267 KB
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1. Department of Mathematics, COMSATS Institute of Information Technology, Lahore, 54000, Pakistan - 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Astronomy - 出版者：Springer Netherlands
- ISSN：1572-946X
文摘
In this paper, we reconsider the accelerated expansion phenomenon in the DGP braneworld scenario which leads to an accelerated universe without cosmological constant or other form of dark energy for the positive branch (\(\epsilon= +1\)) which is not more attractive model. Thus, we assume the DGP braneworld scenario with (\(\epsilon= -1\)) and also interacting Hubble and event horizons pilgrim dark energy models. We extract various cosmological parameters in this scenario and displayed our results with respect to redshift parameter. It is found that the ranges of Hubble parameter are coincided with observational results. The equation of state parameter lies within the suggested ranges of different observational schemes. The squared speed of sound shows stability for all present models in DGP braneworld scenario. The \(\omega_{\vartheta}-\omega'_{\vartheta}\) planes lie in the range (\(\omega_{\vartheta}=-1.13^{+0.24}_{-0.25},\omega'_{\vartheta}<1.32\)) which has been obtained through different observational schemes. It is remarked that our results of various cosmological parameters shows consistency with different observational data like Planck, WP, BAO, \(H_{0}\) and SNLS. Keywords DGP braneworld framework Pilgrim dark energy Cold dark matter Cosmological parameters