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Does the lamb shift of hydrogen electrons effect their energy?

April 26, 2017electrons energy Hydrogen Lamb shift

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Does the lamb shift of hydrogen electrons effect their energy?

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Yes – the energy of all electronic states are slightly shifted by the interaction of he elecron with vacuum fluctuations of the electromagnetic field. For the 2S and 2P levels in hydrogen this amounts to a splitting of about 4.4*10^-6 eV.