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Hu, YZ; Li, M; Li, N; Zhang, ZH; Zhang, ZH (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Holographic dark energy with cosmological constant
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
语种英语
关键词Dark Energy Theory Dark Energy Experiments
摘要Inspired by the multiverse scenario, we study a heterotic dark energy model in which there are two parts, the first being the cosmological constant and the second being the holographic dark energy, thus this model is named the AHDE model. By studying the AHDE model theoretically, we find that the parameters d and Omega(hde) are divided into a few domains in which the fate of the universe is quite different. We investigate dynamical behaviors of this model, and especially the future evolution of the universe. We perform fitting analysis on the cosmological parameters in the AHDE model by using the recent observational data. We find the model yields chi(2)(min) = 426.27 when constrained by Planck + SNLS3 + BAO + HST, comparable to the results of the HDE model (428.20) and the concordant ACDM model (431.35). At 68.3% CL, we obtain -0.07 < Omega(A0) < 0.68 and correspondingly 0.04 < Omega(hde0) < 0.79, implying at present there is considerable degeneracy between the holographic dark energy and cosmological constant components in the AHDE model.
2015
期号8页码:12
学科领域Astronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1088/1475-7516/2015/08/012
收录类别SCI
项目资助者National Natural Science Foundation of China [11275247, 11335012] ; National Natural Science Foundation of China [11275247, 11335012] ; National Natural Science Foundation of China [11275247, 11335012] ; National Natural Science Foundation of China [11275247, 11335012] ; 985 grant at Sun Yat-Sen University ; 985 grant at Sun Yat-Sen University ; 985 grant at Sun Yat-Sen University ; 985 grant at Sun Yat-Sen University
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20905
专题理论物理所科研产出_SCI论文
通讯作者Zhang, ZH (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Hu, YZ,Li, M,Li, N,et al. Holographic dark energy with cosmological constant[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2015(8):12.
APA Hu, YZ,Li, M,Li, N,Zhang, ZH,&Zhang, ZH .(2015).Holographic dark energy with cosmological constant.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),12.
MLA Hu, YZ,et al."Holographic dark energy with cosmological constant".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2015):12.
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