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题名: Constraints on f(R) gravity through the redshift space distortion
作者: Xu, LX
刊名: PHYSICAL REVIEW D
出版日期: 2015
卷号: 91, 期号:6, 页码:63008
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.91.063008
通讯作者: Xu, LX (reprint author), Dalian Univ Technol, Inst Theoret Phys, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China.
文章类型: Article
英文摘要: 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.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: BARYON ACOUSTIC-OSCILLATIONS ;  MATTER POWER SPECTRUM ;  HUBBLE CONSTANT ;  GROWTH-RATE ;  GALAXIES ;  MODEL ;  I.
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11275035, 11491240169] ;  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]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21050
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Recommended Citation:
Xu, LX. Constraints on f(R) gravity through the redshift space distortion[J]. PHYSICAL REVIEW D,2015,91(6):63008.
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