Towards constraining parity-violations in gravity with satellite gradiometry

doi:10.1016/j.physletb.2018.12.049

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	Towards constraining parity-violations in gravity with satellite gradiometry
	P.Xu; Z.Wang; L.E.Qiang
	2019
发表期刊	Physics Letters B
ISSN	0370-2693
卷号	789 页码:378-386
摘要	Parity violation in gravity, if existed, could have important implications, and it is meaningful to search and test the possible observational effects. Chern-Simons modified gravity serves as a natural model for gravitational parity-violations. Especially, considering extensions to Einstein-Hilbert action up to second order curvature terms, it is known that theories of gravitational parity-violation will reduce to the dynamical Chern-Simons gravity. In this letter, we outline the theoretical principles of testing the dynamical Chern-Simons gravity with orbiting gravity gradiometers, which could be naturally incorporated into future satellite gravity missions. The secular gravity gradient signals, due to the Mashhoon-Theiss (anomaly) effect, in dynamical Chern-Simons gravity are worked out, which can improve the constraint of the corresponding Chern-Simons length scale xi(1/4)(Cs) obtained from such measurement scheme. For orbiting superconducting gradiometers or gradiometers with optical readout, a bound xi(1/4)(CS) <= 10(6) km (or even better) could in principle be obtained, which will be at least 2 orders of magnitude stronger than the current one based on the observations from the GP-B mission and the LAGEOS I, II satellites. (C) 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
关键词	Astronomy & Astrophysics,Physics
DOI	10.1016/j.physletb.2018.12.049
收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62916
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	P.Xu,Z.Wang,L.E.Qiang. Towards constraining parity-violations in gravity with satellite gradiometry[J]. Physics Letters B,2019,789:378-386.
APA	P.Xu,Z.Wang,&L.E.Qiang.(2019).Towards constraining parity-violations in gravity with satellite gradiometry.Physics Letters B,789,378-386.
MLA	P.Xu,et al."Towards constraining parity-violations in gravity with satellite gradiometry".Physics Letters B 789(2019):378-386.

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