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Proposed Space Test of the New Equivalence Principle with Rotating Extended Bodies |
| HAN Feng-Tian1**, WU Qiu-Ping1, ZHOU Ze-Bing2, ZHANG Yuan-Zhong3 |
1Department of Precision Instrument, Tsinghua University, Beijing 100084
2School of Physics, Huazhong University of Science and Technology, Wuhan 430074
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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HAN Feng-Tian, WU Qiu-Ping, ZHOU Ze-Bing et al 2014 Chin. Phys. Lett. 31 110401 |
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Abstract We propose a novel scheme for a space free-fall based test of the new equivalence principle (NEP) with two rotating extended bodies made of the same material. The measurement will be carried out by placing the two concentric spinning masses of very different momenta inside a differential electrostatic accelerometer in a drag-free compensated orbit. A difference in the forces necessary to maintain the common trajectory will be an indication of a violation of equivalence or the existence of spin-spin force between the rotating mass and the Earth. The conceptual design of the inertial sensor and its operation mode is presented. Details specific to the model and performance requirements are discussed by using up-to-date space technologies to test the NEP with an accuracy of better than 10?15.
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Published: 28 November 2014
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| PACS: |
04.80.Cc
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(Experimental tests of gravitational theories)
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07.87.+v
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(Spaceborne and space research instruments, apparatus, and components (satellites, space vehicles, etc.))
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