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Go and catch a falling neutron…

1975; AIP Publishing; Volume: 28; Issue: 8 Linguagem: Inglês

10.1063/1.3069105

1945-0699

Gloria B. Lubkin,

Geophysics and Sensor Technology

A team of experimenters has used a neutron interferometer to observe the quantum-mechanical phase shift of neutrons caused by their interaction with the Earth's gravitational field. The experiment is one of the first (if not the first) observations of the principle of equivalence for a quantum-mechanical system. The experimenters, who reported their work in Phys. Rev. Letters on 9 June, are Roberto Colella and Albert W. Overhauser (Purdue University) and Samuel A. Werner (Ford Motor Company).