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Atom gravimeters and gravitational redshift
Peter Wolf1, Luc Blanchet, Christian J Bordé
1Systèmes de Références Temps Espace, CNRS UMR 8630, Laboratoire National de Métrologie et d'Essais, Université Pierre et Marie Curie, Observatoire de Paris, 61 avenue de l'Observatoire, 75014 Paris, France. peter.wolf@obspm.fr
Abstract:
In ref. 1 the authors present a re-interpretation of atom interferometry experiments published a decade ago. They now consider the atom interferometry experiments as a measurement of the gravitational redshift on the quantum clock operating at the Compton frequency omega(C) = mc(2)/ approximately 2pi x 3.0 x 10(25) Hz, where m is the caesium (Cs) atom rest mass. They then argue that this redshift measurement compares favourably with existing as well as projected clock tests. Here we show that this interpretation is incorrect.
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