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Zhao, Z1; Wang, S2
Diagnosing holographic type dark energy models with the Statefinder hierarchy, composite null diagnostic and w-w ' pair
发表期刊SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
语种英语
关键词PROBE WMAP OBSERVATIONS EQUATION-OF-STATE COSMOLOGICAL CONSTRAINTS ACCELERATING UNIVERSE COSMIC COINCIDENCE QUINTESSENCE TRANSITION SUPERNOVAE INFLATION COMPONENT
摘要The main purpose of this work is to distinguish various holographic type dark energy (DE) models, including the AHDE, HDE, NADE, and RDE model, by using various diagnostic tools. The first diagnostic tool is the Statefinder hierarchy, in which the evolution of Statefinder hierarchy parmeter S-3((1))(z) and S-4((1))(z) are studied. The second is composite null diagnostic (CND), in which the trajectories of {S-3((1)),epsilon} and {S-4((1))epsilon} are investigated, where epsilon is the fractional growth parameter. The last is w-w' analysis, where w is the equation of state for DE and the prime denotes derivative with respect to lna. In the analysis we consider two cases: varying current fractional DE density Omega(de0) and varying DE model parameter C. We find that: (1) both the Statefinder hierarchy and the CND have qualitative impact on AHDE, but only have quantitative impact on HDE. (2) S-4((1)) can lead to larger differences than S-3((1)), while the CND pair has a stronger ability to distinguish different models than the Statefinder hierarchy. (3) For the case of varying C, the {w, w'} pair has qualitative impact on AHDE; for the case of varying Omega(de0) the {w, w'} pair only has quantitative impact; these results are different from the cases of HDE, RDE, and NADE, in which the {w, w'} pair only has quantitative impact on these models. In conclusion, compared with HDE, RDE, and NADE, the AHDE model can be easily distinguished by using these diagnostic tools.
2018
ISSN1674-7348
卷号61期号:3页码:39811
学科领域Physics
学科门类Physics, Multidisciplinary
DOI10.1007/s11433-017-9111-4
收录类别SCIE
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22952
专题理论物理所科研产出_SCI论文
作者单位1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
3.Sun Yat Sen Univ, Sch Astron & Space Sci, Guangzhou 510275, Guangdong, Peoples R China
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Zhao, Z,Wang, S. Diagnosing holographic type dark energy models with the Statefinder hierarchy, composite null diagnostic and w-w ' pair[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2018,61(3):39811.
APA Zhao, Z,&Wang, S.(2018).Diagnosing holographic type dark energy models with the Statefinder hierarchy, composite null diagnostic and w-w ' pair.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,61(3),39811.
MLA Zhao, Z,et al."Diagnosing holographic type dark energy models with the Statefinder hierarchy, composite null diagnostic and w-w ' pair".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 61.3(2018):39811.
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