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题名: Dynamical vacuum energy, holographic quintom, and the reconstruction of scalar-field dark energy
作者: Zhang, Xin
刊名: PHYSICAL REVIEW D
出版日期: 2006
卷号: 74, 期号:10, 页码:-
关键词: EQUATION-OF-STATE ;  DIGITAL SKY SURVEY ;  COSMOLOGICAL CONSTANT ;  BLACK-HOLES ;  ACCELERATING UNIVERSE ;  COSMIC COINCIDENCE ;  ENTROPY BOUNDS ;  MODEL ;  CONSTRAINTS ;  SUPERNOVA
学科分类: Physics
通讯作者: Zhang, X , CCAST World Lab, POB 8730, Beijing 100080, Peoples R China
部门归属: CCAST World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China
英文摘要: When taking the holographic principle into account, the vacuum energy will acquire dynamical property that its equation of state is evolving. The current available observational data imply that the holographic vacuum energy behaves as quintom-type dark energy. We adopt the viewpoint of that the scalar-field models of dark energy are effective theories of an underlying theory of dark energy. If we regard the scalar-field model as an effective description of such a holographic vacuum theory, we should be capable of using the scalar-field model to mimic the evolving behavior of the dynamical vacuum energy and reconstructing this scalar-field model according to the fits of the observational dataset. We find the generalized ghost condensate model is a good choice for depicting the holographic vacuum energy since it can easily realize the quintom behavior. We thus reconstruct the function h(phi) of the generalized ghost condensate model using the best-fit results of the observational data.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000242409800013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5866
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Zhang, Xin. Dynamical vacuum energy, holographic quintom, and the reconstruction of scalar-field dark energy[J]. PHYSICAL REVIEW D,2006,74(10):-.
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