Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.100.031101
Title: Atom-interferometry tests of the isotropy of post-newtonian gravity
Authors: Müller, H.
Chiow, S.-W.
Herrmann, S.
Chu, S.
Chung, K.-Y. 
Issue Date: 22-Jan-2008
Source: Müller, H., Chiow, S.-W., Herrmann, S., Chu, S., Chung, K.-Y. (2008-01-22). Atom-interferometry tests of the isotropy of post-newtonian gravity. Physical Review Letters 100 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.100.031101
Abstract: We present a test of the local Lorentz invariance of post-Newtonian gravity by monitoring Earth's gravity with a Mach-Zehnder atom interferometer that features a resolution of up to 8×10-9g/Hz, the highest reported thus far. Expressed within the standard model extension (SME) or Nordtvedt's anisotropic universe model, the analysis limits four coefficients describing anisotropic gravity at the ppb level and three others, for the first time, at the 10 ppm level. Using the SME we explicitly demonstrate how the experiment actually compares the isotropy of gravity and electromagnetism. © 2008 The American Physical Society.
Source Title: Physical Review Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/95835
ISSN: 00319007
DOI: 10.1103/PhysRevLett.100.031101
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