Atom gravimeters and gravitational redshift

Abstract

In a recent paper, H. Mueller, A. Peters and S. Chu [A precision measurement of the gravitational redshift by the interference of matter waves, Nature 463, 926-929 (2010)] argued that atom interferometry experiments published a decade ago did in fact measure the gravitational redshift on the quantum clock operating at the very high Compton frequency associated with the rest mass of the Caesium atom. In the present Communication we show that this interpretation is incorrect.

2 pages, Brief Communication appeared in Nature (2 September 2010)

References in corpus (1)

• Test of the Equivalence Principle Using a Rotating Torsion Balance

Cited by in corpus (5)

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• Reply to: Atom gravimeters and the gravitational redshift
• Gravitational Redshift, Equivalence Principle, and Matter Waves