Space tests of relativistic gravity with precision clocks and atom interferometers |
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Authors: | L Maleki |
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Institution: | (1) Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099, USA;(2) OEwaves Inc., 1010 East Union St., Pasadena, CA 91106, USA |
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Abstract: | Precision clocks and interferometers in space can test relativistic gravity with extremely high sensitivity. Yet, only a single
such test has been performed, namely the celebrated flight of a hydrogen maser in a sub-orbital trajectory in 1976 (GP-A mission).
This paper suggests some of the obstacles to space flight of precision instruments, and describes how the emergence of new
technology might offer a pathway for removing those obstacles. A brief review of emerging technologies is made, and new mission
concepts based on them are described. Some of the technologies that can impact more tests of relativistic gravity in space
at a more distant future are also described. |
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Keywords: | Space tests of gravity Experimental relativity Atomic clocks Atom interferometers Variation of constants Spin gravity Fundamental tests |
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