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Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited
Deng, Xue-Mei1; Xie, Yi2
2015-06-01
Source PublicationINTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
Volume54Issue:6Pages:1739-1749
AbstractAs 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.
Keywordf (r,t) Gravity Experimental Studies Of Gravity Solar System Objects Orbit Determination And Improvement Ephemerides
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10773-014-2377-1
WOS KeywordDARK ENERGY-MODEL ; COSMOLOGICAL CONSTANT ; PERIHELION PRECESSION ; GRAVITATIONAL-FIELD ; GENERAL RELATIVITY ; QUADRUPOLE-MOMENT ; PERFECT FLUID ; F R ; PLANETS ; ORBIT
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000353813900001
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14870
Collection历算和天文参考系研究团组
Affiliation1.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
Recommended Citation
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.
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