Failure of the Classical Field Model of Mössbauer Spectroscopy
Juha Javanainen, P. Helistö, Erkki Ikonen, Toivo E. Katila · Physical Review Letters · 1985
The conventional classical treatment of the field emitted by a M\"ossbauer nucleus predicts an enhanced counting rate in a two-detector coincidence scheme, whereas quantum electrodynamics does not. Our experiment agrees with QED.