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Probing f(T) gravity with gravitational time advancement
Deng, Xue-Mei
2018-09-06
Source PublicationCLASSICAL AND QUANTUM GRAVITY
ISSN0264-9381
Volume35Issue:17Pages:11
Abstract

The effects of a quadratic f(T) gravity on astronomical observations and solar system experiments were recently considered in previous works. Its deviation from Einstein's general relativity is characterized by a model parameter a and the cosmological constant A whose constraints were respectively found as vertical bar alpha vertical bar <= 2.3 x 10 m(2) and vertical bar Lambda vertical bar <= 1.8 x 10(-43) m(-2) in the solar system. In this paper, a new test of the f(T) gravity by measuring the gravitational time advancement is presented and studied. The gravitational time advancement arises in a two-way light propagation between an observer and a distant spacecraft, where the light traveling time is recorded by the observer's proper time. It is found that (1) relying on their signs, alpha and Lambda can make the gravitational time advancement smaller or larger than the one of general relativity; (2) the configuration of the inferior conjunction between the observer and the spacecraft is more suitable for detecting the advancement, because its effect is almost 3.5 times larger than the one in the superior conjunction; (3) the time advancement could be effectively complementary to Shapiro time delay for gravitational experiments in practice; and (4) the implement of planetary laser ranging and optical clocks in the future will provide much more insight into the f(T) gravity.

Keywordgravitation gravitational time advancement f(T) gravity
DOI10.1088/1361-6382/aad391
WOS KeywordGENERAL-RELATIVITY ; TORSION ; INFLATION ; SPIN
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Multidisciplinary ; Physics, Particles & Fields
WOS IDWOS:000440625600002
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21649
Collection中国科学院紫金山天文台
Corresponding AuthorDeng, Xue-Mei
AffiliationChinese Acad Sci, Purple Mt Observ, Nanjing 210034, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Deng, Xue-Mei. Probing f(T) gravity with gravitational time advancement[J]. CLASSICAL AND QUANTUM GRAVITY,2018,35(17):11.
APA Deng, Xue-Mei.(2018).Probing f(T) gravity with gravitational time advancement.CLASSICAL AND QUANTUM GRAVITY,35(17),11.
MLA Deng, Xue-Mei."Probing f(T) gravity with gravitational time advancement".CLASSICAL AND QUANTUM GRAVITY 35.17(2018):11.
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