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Wu, Xing; Cai, Rong-Gen; Zhu, Zong-Hong; Zhu, ZH , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
Dynamics of holographic vacuum energy in the DGP model
Source PublicationPHYSICAL REVIEW D
KeywordDigital Sky Survey Probe Wmap Observations Dark Energy Cosmological Constant Ia Supernovae Data Release Accelerating Universe Constraints Galaxies Gravity
AbstractWe consider the evolution of the vacuum energy in the Dvali-Gabadadze-Porrati (DGP) model according to the holographic principle under the assumption that the relation linking the IR and UV cutoffs still holds in this scenario. The model is studied when the IR cutoff is chosen to be the Hubble scale H(-1), the particle horizon R(ph), and the future event horizon R(eh), respectively. The two branches of the DGP model are also taken into account. Through numerical analysis, we find that in the cases of H(-1) in the (+) branch and R(eh) in both branches, the vacuum energy can play the role of dark energy. Moreover, when considering the combination of the vacuum energy and the 5D gravity effect in both branches, the equation of state of the effective dark energy may cross -1, which may lead to the big rip singularity. Besides, we constrain the model with the Type Ia supernovae and baryon oscillation data and find that our model is consistent with current data within 1 sigma, and that the observations prefer either a pure holographic dark energy or a pure DGP model.
2008
ISSN1550-7998
Volume77Issue:4Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5584
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZhu, ZH , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Wu, Xing,Cai, Rong-Gen,Zhu, Zong-Hong,et al. Dynamics of holographic vacuum energy in the DGP model[J]. PHYSICAL REVIEW D,2008,77(4):-.
APA Wu, Xing,Cai, Rong-Gen,Zhu, Zong-Hong,&Zhu, ZH , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.(2008).Dynamics of holographic vacuum energy in the DGP model.PHYSICAL REVIEW D,77(4),-.
MLA Wu, Xing,et al."Dynamics of holographic vacuum energy in the DGP model".PHYSICAL REVIEW D 77.4(2008):-.
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