Towards constraining parity-violations in gravity with satellite gradiometry
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318309845 |
| _version_ | 1818147520050626560 |
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| author | Peng Xu Zhi Wang Li-E Qiang |
| author_facet | Peng Xu Zhi Wang Li-E Qiang |
| author_sort | Peng Xu |
| collection | DOAJ |
| description | 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 ξcs14 obtained from such measurement scheme. For orbiting superconducting gradiometers or gradiometers with optical readout, a bound ξcs14≤106km (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. |
| first_indexed | 2024-12-11T12:36:33Z |
| format | Article |
| id | doaj.art-f7ec4f0099784079a0748fef04b67bf6 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-11T12:36:33Z |
| publishDate | 2019-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-f7ec4f0099784079a0748fef04b67bf62022-12-22T01:07:07ZengElsevierPhysics Letters B0370-26932019-02-01789378386Towards constraining parity-violations in gravity with satellite gradiometryPeng Xu0Zhi Wang1Li-E Qiang2Academy of Mathematics and Systems Science, Chinese Academy of Sciences, No. 55 Zhongguancun East Road, Haidian District, Beijing, 100190, China; State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China; University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China; Corresponding author.Changchun Insitute of Optics, fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China; State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China; Co-first author.Chang'an University, Yanta District, Xi'an, 710064, ChinaParity 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 ξcs14 obtained from such measurement scheme. For orbiting superconducting gradiometers or gradiometers with optical readout, a bound ξcs14≤106km (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.http://www.sciencedirect.com/science/article/pii/S0370269318309845 |
| spellingShingle | Peng Xu Zhi Wang Li-E Qiang Towards constraining parity-violations in gravity with satellite gradiometry Physics Letters B |
| title | Towards constraining parity-violations in gravity with satellite gradiometry |
| title_full | Towards constraining parity-violations in gravity with satellite gradiometry |
| title_fullStr | Towards constraining parity-violations in gravity with satellite gradiometry |
| title_full_unstemmed | Towards constraining parity-violations in gravity with satellite gradiometry |
| title_short | Towards constraining parity-violations in gravity with satellite gradiometry |
| title_sort | towards constraining parity violations in gravity with satellite gradiometry |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318309845 |
| work_keys_str_mv | AT pengxu towardsconstrainingparityviolationsingravitywithsatellitegradiometry AT zhiwang towardsconstrainingparityviolationsingravitywithsatellitegradiometry AT lieqiang towardsconstrainingparityviolationsingravitywithsatellitegradiometry |