Probing gravity at cosmological scales by measurements which test the relationship between gravitational lensing and matter overdensity

	Probing gravity at cosmological scales by measurements which test the relationship between gravitational lensing and matter overdensity
	Zhang, Pengjie ; Liguori, Michele ; Bean, Rachel ; Dodelson, Scott
刊名	PHYSICAL REVIEW LETTERS
	2007-10-05
卷号	99 期号:14 页码:141302
英文摘要	The standard cosmology is based on general relativity (GR) and includes dark matter and dark energy and predicts a fixed relationship between the gravitational potentials responsible for gravitational lensing and the matter overdensity. Alternative theories of gravity often make different predictions. We propose a set of measurements which can test this relationship, thereby distinguishing between dark energy or matter models and models in which gravity differs from GR. Planned surveys will be able to measure E-G, an observational quantity whose expectation value is equal to the ratio of the Laplacian of the Newtonian potentials to the peculiar velocity divergence, to percent accuracy. This will easily separate alternatives such as the cold dark matter model with a cosmological constant, Dvali-Gabadadze-Porrati, TeVeS, and f(R) gravity.
学科主题	星系与宇宙学研究中心
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	GALAXIES ; BRANE
收录类别	SCI
语种	英语
WOS记录号	WOS:000249974000010
公开日期	2010-11-08
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/11905]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.SHAO, JOINGC, Shanghai, Peoples R China 3.USTC, Shanghai, Peoples R China 4.Univ Cambridge, Ctr Math Sci, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England 5.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 6.Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA 7.Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
推荐引用方式 GB/T 7714	Zhang, Pengjie,Liguori, Michele,Bean, Rachel,et al. Probing gravity at cosmological scales by measurements which test the relationship between gravitational lensing and matter overdensity[J]. PHYSICAL REVIEW LETTERS,2007,99(14):141302.
APA	Zhang, Pengjie,Liguori, Michele,Bean, Rachel,&Dodelson, Scott.(2007).Probing gravity at cosmological scales by measurements which test the relationship between gravitational lensing and matter overdensity.PHYSICAL REVIEW LETTERS,99(14),141302.
MLA	Zhang, Pengjie,et al."Probing gravity at cosmological scales by measurements which test the relationship between gravitational lensing and matter overdensity".PHYSICAL REVIEW LETTERS 99.14(2007):141302.