Quantum electrodynamics based on self-fields, without second quantization: A nonrelativistic calculation of g-2.


Bethe' first calculated the Lamb shift for the hydrogen atom in 1947, using a method that was essentially nonrelativistic (NR), but nevertheless approximately correct. In 1948, Welton gave an intuitive derivation of the Bethe result by considering the coupling of the electron to second-quantized electromagnetic vacuum fluctuations —leading to the generally… (More)


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