Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited

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	Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited
	Deng, Xue-Mei1 ; Xie, Yi 2
刊名	INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
	2015-06-01
卷号	54 期号:6 页码:1739-1749
关键词	f (R,T) gravity Experimental studies of gravity Solar system objects Orbit determination and improvement Ephemerides
英文摘要	As a generalization of Einstein's general relativity (GR), the f(R, T) gravity replace the gravitational Lagrangian of GR with an arbitrary function of the Ricci scalar R and of the trace of the stress-energy tensor T. It can induce an extra acceleration a (E) in the dynamics of massive test particles due to the physical coupling between matter and geometry. In this work, we confront this extra acceleration with planetary motions in the solar system. Using the supplementary advances in the perihelia provided by current INPOP10a and EPM2011 ephemerides, we obtain new upper limits on a (E) when the uncertainty of the Sun's quadrupole moment and the Lense-Thirring effect due to the Sun's angular momentum are properly taken into account. These two factors were mostly absent in previous works dealing with a (E). We find that INPOP10a yields the upper limit as a (E)=(-0.04 +/- 4.81)x10(-15) m s (-2) and EPM2011 gives a (E)=(0.06 +/- 1.58)x10(-15) m s (-2). Both of them are improved at least by about 10 times than previous results obtained in the solar system and they are smaller than the results given by fitting rotation curves of galaxies by about 4 orders of magnitude. This discrepancy of a (E) on these scales seems to imply that its effects might be screened in high density regions.
学科主题	天文和天体物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	DARK ENERGY-MODEL ; COSMOLOGICAL CONSTANT ; PERIHELION PRECESSION ; GRAVITATIONAL-FIELD ; GENERAL RELATIVITY ; QUADRUPOLE-MOMENT ; PERFECT FLUID ; F R ; PLANETS ; ORBIT
收录类别	SCI
语种	英语
WOS记录号	WOS:000353813900001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/14870]
专题	紫金山天文台_历算和天文参考系研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Deng, Xue-Mei,Xie, Yi. Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited[J]. INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,2015,54(6):1739-1749.
APA	Deng, Xue-Mei,&Xie, Yi.(2015).Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited.INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,54(6),1739-1749.
MLA	Deng, Xue-Mei,et al."Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited".INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 54.6(2015):1739-1749.