New Probe of Departures from General Relativity Using Minkowski Functionals

	New Probe of Departures from General Relativity Using Minkowski Functionals
	Fang, Wenjuan 1,2; Li, Baojiu 3; Zhao, Gong-Bo4,5
刊名	PHYSICAL REVIEW LETTERS
	2017-05-02
卷号	118 期号:18
英文摘要	The morphological properties of the large scale structure of the Universe can be fully described by four Minkowski functionals (MFs), which provide important complementary information to other statistical observables such as the widely used 2-point statistics in configuration and Fourier spaces. In this work, for the first time, we present the differences in the morphology of the large scale structure caused by modifications to general relativity (to address the cosmic acceleration problem), by measuring the MFs from N-body simulations of modified gravity and general relativity. We find strong statistical power when using the MFs to constrain modified theories of gravity: with a galaxy survey that has survey volume similar to 0.125 (h(-1) Gpc)(3) and galaxy number density similar to 1/(h(-1) Mpc)(3), the two normal-branch Dvali-GabadadzePorrati models and the F5 f(R) model that we simulated can be discriminated from the Lambda CDM model at a significance level greater than or similar to 5 sigma with an individual MF measurement. Therefore, the MF of the large scale structure is potentially a powerful probe of gravity, and its application to real data deserves active exploration.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	LARGE-SCALE STRUCTURE ; PRIMORDIAL NON-GAUSSIANITY ; MORPHOLOGICAL ANALYSIS ; ACCELERATING UNIVERSE ; REDSHIFT SPACE ; STANDARD RULER ; TOPOLOGY ; GRAVITY ; STATISTICS ; SUPERNOVAE
收录类别	SCI
语种	英语
WOS记录号	WOS:000400672700002
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8853]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 3.Univ Durham, Inst Computat Cosmol, Dept Phys, Durham DH1 3LE, England 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
推荐引用方式 GB/T 7714	Fang, Wenjuan,Li, Baojiu,Zhao, Gong-Bo. New Probe of Departures from General Relativity Using Minkowski Functionals[J]. PHYSICAL REVIEW LETTERS,2017,118(18).
APA	Fang, Wenjuan,Li, Baojiu,&Zhao, Gong-Bo.(2017).New Probe of Departures from General Relativity Using Minkowski Functionals.PHYSICAL REVIEW LETTERS,118(18).
MLA	Fang, Wenjuan,et al."New Probe of Departures from General Relativity Using Minkowski Functionals".PHYSICAL REVIEW LETTERS 118.18(2017).