Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-02-28
Phys.Rev.D78:042003,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
34 pages, 7 figures; v2: revised version to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.78.042003
Atom interferometry is now reaching sufficient precision to motivate laboratory tests of general relativity. We begin by explaining the non-relativistic calculation of the phase shift in an atom interferometer and deriving its range of validity. From this we develop a method for calculating the phase shift in general relativity. This formalism is then used to find the relativistic effects in an atom interferometer in a weak gravitational field for application to laboratory tests of general relativity. The potentially testable relativistic effects include the non-linear three-graviton coupling, the gravity of kinetic energy, and the falling of light. We propose experiments, one currently under construction, that could provide a test of the principle of equivalence to 1 part in 10^15 (300 times better than the present limit), and general relativity at the 10% level, with many potential future improvements. We also consider applications to other metrics including the Lense-Thirring effect, the expansion of the universe, and preferred frame and location effects.
Dimopoulos Savas
Graham Peter W.
Hogan Jason M.
Kasevich Mark A.
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