Holographic Dark Energy in Brans-Dicke Cosmology with Granda-Oliveros Cut-off

被引：0
|
作者：
Mubasher Jamil
K. Karami
A. Sheykhi
E. Kazemi
Z. Azarmi
机构：
[1] National University of Sciences and Technology,Center for Advanced Mathematics and Physics
[2] University of Kurdistan,Department of Physics
[3] Research Institute for Astronomy & Astrophysics of Maragha (RIAAM),Department of Physics
[4] Shahid Bahonar University,undefined
来源：
International Journal of Theoretical Physics | 2012年 / 51卷
关键词：
Dark energy; Brans-Dicke gravity; Holographic principle; Phantom energy;
D O I：
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中图分类号：
学科分类号：
摘要：
Motivated by the recent works of one of us (Karami and Fehri, Int. J. Theor. Phys. 49:1118, 2010; Phys. Lett. B 684:61, 2010), we study the holographic dark energy in Brans-Dicke gravity with the Granda-Oliveros cut-off proposed recently in literature. We find out that when the present model is combined with Brans-Dicke field the transition from normal state where wD>−1 to the phantom regime where wD<−1 for the equation of state of dark energy can be more easily achieved for than when resort to the Einstein field equations is made. Furthermore, the phantom crossing is more easily achieved when the matter and the holographic dark energy undergo an exotic interaction. We also calculate some relevant cosmological parameters and their evolution.
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页码：604 / 611
页数：7
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