Knowledge Management System of Institute of Theoretical Physics, CAS
Xu, LX; Xu, LX (reprint author), Dalian Univ Technol, Inst Theoret Phys, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China. | |
Constraints on f(R) gravity through the redshift space distortion | |
Source Publication | PHYSICAL REVIEW D |
Language | 英语 |
Abstract | In this paper, a specific family of f(R) models that can produce the Lambda CDM background expansion history is constrained by using the currently available geometric and dynamic probes. The scale dependence of the growth rate f(z, k) in this specific family of f(R) model is shown. Therefore to eliminate the scale dependence of f sigma(8)(z) in theory, which usually is defined as the product of f(z, k) and sigma(8)(z), we define f sigma(8)(z) = d sigma(8)(z)/d ln a, which is obviously scale independent and reproduces the conventional definition in the standard Lambda CDM cosmology. In doing so, under the assumption that future probes having the same best fit values as the current ten data points of f sigma(8)(z), even having 20% error bars enlarged, we find a preliminary constraint f(R0) = -2.58(-0.58)(+2.14) x 10(-6) in 1 sigma regions. This indicates the great potential that redshift space distortions have in constraining modified gravity theories. We also discuss the nonlinear matter power spectrum based on different halo fit models. |
2015 | |
Volume | 91Issue:6Pages:63008 |
Subject Area | Astronomy & Astrophysics ; Physics |
DOI | http://dx.doi.org/10.1103/PhysRevD.91.063008 |
Indexed By | SCI |
Funding Organization | National Natural Science Foundation of China [11275035, 11491240169] ; National Natural Science Foundation of China [11275035, 11491240169] ; National Natural Science Foundation of China [11275035, 11491240169] ; National Natural Science Foundation of China [11275035, 11491240169] ; Fundamental Research Funds for the Central Universities [DUT13LK01] ; Fundamental Research Funds for the Central Universities [DUT13LK01] ; Fundamental Research Funds for the Central Universities [DUT13LK01] ; Fundamental Research Funds for the Central Universities [DUT13LK01] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF101CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF101CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF101CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF101CJ1] |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itp.ac.cn/handle/311006/21050 |
Collection | 理论物理所科研产出_SCI论文 |
Corresponding Author | Xu, LX (reprint author), Dalian Univ Technol, Inst Theoret Phys, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China. |
Recommended Citation GB/T 7714 | Xu, LX,Xu, LX . Constraints on f(R) gravity through the redshift space distortion[J]. PHYSICAL REVIEW D,2015,91(6):63008. |
APA | Xu, LX,&Xu, LX .(2015).Constraints on f(R) gravity through the redshift space distortion.PHYSICAL REVIEW D,91(6),63008. |
MLA | Xu, LX,et al."Constraints on f(R) gravity through the redshift space distortion".PHYSICAL REVIEW D 91.6(2015):63008. |
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