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题名: Solar System's Bounds on the Extra Acceleration of f(R, T) Gravity Revisited
作者: Deng XueMei(邓雪梅)1; Xie, Yi2
刊名: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
出版日期: 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
学科分类: 天文和天体物理
DOI: 10.1007/s10773-014-2377-1
文章类型: Article
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.
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
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000353813900001
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14870
Appears in Collections:历算和天文参考系研究团组_期刊论文

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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
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