SPATIAL RICCI SCALAR DARK ENERGY MODEL

	SPATIAL RICCI SCALAR DARK ENERGY MODEL
	Yang, Rong-Jia 1; Zhu, Zong-Hong 2; Wu, Fengquan3
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS A
	2011-01-20
卷号	26 期号:2 页码:317-329
关键词	Dark energy spatial Ricci scalar SNIa perturbations
英文摘要	Inspired by the holographic principle, we suggest that the density of dark energy is proportional to the spatial Ricci scalar curvature (SRDE). Such a model is phenomenologically viable. The best fit values of its parameters at 68% confidence level are found to be Omega(m0) = 0.259 +/- 0.016 and alpha = 0.261 +/- 0.0122, constrained from the Union+CFA3 sample of 397 SNIa and the BAO measurement. We find that the equation of state of SRDE crosses -1 at z similar or equal to -0.14. The present value of the deceleration parameter q(z) for SRDE is found to be q(z=0) similar to -0.85. The phase transition from deceleration to acceleration of the Universe for SRDE occurs at the redshift z(q=0) similar to 0.4. After studying the perturbation of each component of the Universe, we show that the matter power spectra and cosmic microwave background temperature anisotropy are slightly affected by SRDE, compared with Lambda CDM.
收录类别	SCI
语种	英语
WOS记录号	WOS:000286612300008
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8033]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China 2.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Yang, Rong-Jia,Zhu, Zong-Hong,Wu, Fengquan. SPATIAL RICCI SCALAR DARK ENERGY MODEL[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2011,26(2):317-329.
APA	Yang, Rong-Jia,Zhu, Zong-Hong,&Wu, Fengquan.(2011).SPATIAL RICCI SCALAR DARK ENERGY MODEL.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,26(2),317-329.
MLA	Yang, Rong-Jia,et al."SPATIAL RICCI SCALAR DARK ENERGY MODEL".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 26.2(2011):317-329.