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Solar System and stellar tests of noncommutative spectral geometry
Deng, Xue-Mei
2017-02-17
Source PublicationEUROPEAN PHYSICAL JOURNAL PLUS
ISSN2190-5444
Volume132Issue:2Pages:10
Corresponding AuthorDeng, Xue-Mei(xmd@pmo.ac.cn)
AbstractBy using purely geometric forces on a noncommutative spacetime, noncommutative spectral geometry (NCSG) was proposed as a possible way to unify gravitation with the other known fundamental forces. The correction of the NCSG solution to Einstein's general relativity (GR) in the four-dimensional spacetime can be characterized by a parameter beta similar to 1/root f(0), where f(0) denotes the coupling constants at the unification. The parameter beta contributes a Yukawa-type correction exp(-beta r)/r to the Newtonian gravitational potential at the leading order, which can be interpreted as either the massive component of the gravitational field or the typical range of interactions carried by that component of the field. As an extension of previous works, we mainly focus on the Solar System and stellar tests of the theory, and the constraints on similar to obtained by the present work is independent of the previous ones. In the Solar System, we investigate the effects of the NCSG on the perihelion shift of a planet, deflection of light, time delay at superior conjunction (SC) and inferior conjunction (IC), and the Cassini experiment by modeling new observational results and adopting new datasets. In the binary pulsars system, based on the observational data sets of four systems of binary pulsars, PSR B1913+ 16, PSR B1534+ 12, PSR J0737-3039, and PSR B2127+ 11C, the secular periastron precessions are used to constrain this theory. These effects in the scale of the Solar System and binary pulsars were not considered in previous works. We find that the lower bounds given by these experiments are beta similar or equal to 10(-9) similar to 10(-10) m(-1), considerably smaller than those obtained in laboratory experiments. This confirms that experiments and observations at smaller scales are more favorable for testing the NCSG theory.
DOI10.1140/epjp/i2017-11376-1
WOS KeywordINVERSE-SQUARE LAW ; GENERAL-RELATIVITY ; PRELIMINARY LIMITS ; LOGARITHMIC CORRECTION ; GRAVITATIONAL-FIELD ; DARK-MATTER ; GRAVITY ; CONSTRAINTS ; DYNAMICS ; SPACECRAFT
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000394568000001
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23236
Collection中国科学院紫金山天文台
Corresponding AuthorDeng, Xue-Mei
AffiliationChinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Deng, Xue-Mei. Solar System and stellar tests of noncommutative spectral geometry[J]. EUROPEAN PHYSICAL JOURNAL PLUS,2017,132(2):10.
APA Deng, Xue-Mei.(2017).Solar System and stellar tests of noncommutative spectral geometry.EUROPEAN PHYSICAL JOURNAL PLUS,132(2),10.
MLA Deng, Xue-Mei."Solar System and stellar tests of noncommutative spectral geometry".EUROPEAN PHYSICAL JOURNAL PLUS 132.2(2017):10.
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