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题名: Holography, UV/IR Relation, Causal Entropy Bound, and Dark Energy
作者: 蔡荣根 ;  Hu Bin ;  Zhang Yi
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2009
卷号: 51, 期号:5, 页码:954-960
关键词: COSMOLOGICAL CONSTANT ;  FIELD THEORY ;  MODEL ;  TIME ;  QUINTESSENCE ;  CONSTRAINTS ;  SUPERNOVAE ;  UNIVERSE
学科分类: Physics
通讯作者: Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
部门归属: [Cai, RG; Hu, B; Zhang, Y] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: The constraint on the total energy in a given spatial region is given from holography by the mass of a black hole that just fits in that region, which leads to an UV/IR relation: the maximal energy density in that region is propotional to M(p)(2)/L(2), wher M(p) is the Planck mass and L is the spatial scale of that region under consideration. Assuming that maximal black hole in the universe is formed through gravitational collapse of perturbations in the universe, then the "Jeans" scale of the perturbations gives a causal connection scale R(CC). For gravitational perturbations, R(CC)(-2) = Max ((H) over dot + 2H(2), -(H) over dot) for a flat universe. We study the cosmological dynamics of the corresponding vacuum energy density by choosing the causal connection scale as the IR cutoff in the UV/IR relation, in the cases of the vacuum energy density as an independently conserved energy component and an effective dynamical cosmological constant, respectively. It turns out that only the case with the choice R(CC)(-2) = (H) over dot + 2H(2), could be consistent with the current cosmological observations when the vacuum density appears as an independently conserved energy component. In this case, the model is called holographic Ricci scalar dark energy model in the literature.
资助者: Chinese Academy of Sciences[KJCX3-SYW-N2]; National Natural Science Foundation of China[10821504, 10525060]
收录类别: SCI
WOS记录号: WOS:000266219300039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5336
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Recommended Citation:
Cai Rong-Gen,Hu Bin,Zhang Yi. Holography, UV/IR Relation, Causal Entropy Bound, and Dark Energy[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2009,51(5):954-960.
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