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Huang, ZP; Wu, YL; Huang, ZP (reprint author), Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China.
HOLOGRAPHIC DARK ENERGY MODEL CHARACTERIZED BY THE CONFORMAL-AGE-LIKE LENGTH
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS A
语种英语
关键词Cosmological Constant Universe Supernovae
摘要A holographic dark energy model characterized by the conformal-age-like length scale L = 1/a(4)(t) integral(t)(O) dt' a(3)(t') is motivated from the four-dimensional space-time volume at cosmic time t in the flat Friedmann-Robertson-Walker (FRW) universe. It is shown that when the background constituent with constant equation of state w(m) dominates the universe in the early time, the fractional energy density of the dark energy scales as Omega(de) similar or equal to 9/4 (3 + w(m))(2) d(2)a(2) with the equation of state given by w(de) similar or equal to -2/3 + w(m). The value of w(m) is taken to be w(m) similar or equal to -1 during inflation, w(m) = 1/3 in radiation-dominated epoch and w(m) = 0 in matter-dominated epoch, respectively. When the model parameter d takes the normal value at order one, the fractional density of dark energy is naturally negligible in the early universe, Omega(de) << 1 at a << 1. With such an analytic feature, the model can be regarded as a single-parameter model like the ACDM model, so that the present fractional energy density Omega(de)(a = 1) can solely be determined by solving the differential equation of Omega(de) once d is given. We further extend the model to the general case in which both matter and radiation are present. The scenario involving possible interaction between the dark energy and the background constituent is also discussed.
2012
ISSN0217-751X
卷号27期号:16
学科领域Physics
收录类别SCI
项目资助者National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10975184, 10947016] ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10975184, 10947016] ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10975184, 10947016] ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10975184, 10947016]
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15075
专题理论物理所科研产出_SCI论文
通讯作者Huang, ZP (reprint author), Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China.
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GB/T 7714
Huang, ZP,Wu, YL,Huang, ZP . HOLOGRAPHIC DARK ENERGY MODEL CHARACTERIZED BY THE CONFORMAL-AGE-LIKE LENGTH[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2012,27(16).
APA Huang, ZP,Wu, YL,&Huang, ZP .(2012).HOLOGRAPHIC DARK ENERGY MODEL CHARACTERIZED BY THE CONFORMAL-AGE-LIKE LENGTH.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,27(16).
MLA Huang, ZP,et al."HOLOGRAPHIC DARK ENERGY MODEL CHARACTERIZED BY THE CONFORMAL-AGE-LIKE LENGTH".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 27.16(2012).
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