Holographic dark energy with cosmological constant

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	Holographic dark energy with cosmological constant
	Hu, YZ; Li, M; Li, N; Zhang, ZH
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2015
期号	8 页码:12
关键词	dark energy theory dark energy experiments
通讯作者	Zhang, ZH (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
英文摘要	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.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	BARYON ACOUSTIC-OSCILLATIONS ; BLACK-HOLES ; ACCELERATING UNIVERSE ; HUBBLE CONSTANT ; IA SUPERNOVAE ; MODEL ; CONSTRAINTS ; ENTROPY ; THERMODYNAMICS ; PERTURBATIONS
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20905]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 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.(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.