References
P. A. M. Dirac:Suppl. Nuovo Cimento,6, 322 (1957).
For example:F. A. Berezin:The Method of Second Quantization (New York, 1966), p. 186.
Physical units are chosen to given ℏ-c=1 ands 2/4π≃1/137.
G. Rosen:Dressed stationary states in quantum electrodynamics to order ε2 (to appear elsewhere).
G. Rosen:Phys. Rev.,167, 1395 (1968) and works cited therein. For an application of the Rayleigh-Ritz procedure to the one-electron problem with neglect of electron-positron pairs, seeG. Rosen:Phys. Rev. (August 25, 1968).
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Rosen, G. The dressed vacuum in quantum electrodynamics. Nuovo Cimento A (1965-1970) 57, 870–874 (1968). https://doi.org/10.1007/BF02751391
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DOI: https://doi.org/10.1007/BF02751391