Nonperturbative quantum electrodynamics: The Lamb shift |
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Authors: | A. O. Barut J. Kraus |
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Affiliation: | (1) Department of Physics, The University of Colorado, 80309 Boulder, Colorado;(2) Sektion Physik der Universität München, 8 München 2, Germany |
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Abstract: | The nonlinear integro-differential equation, obtained from the coupled Maxwell-Dirac equations by eliminating the potential A, is solved by iteration rather than perturbation. The energy shift is complex, the imaginary part giving the spontaneous emission. Both self-energy and vacuum polarization terms are obtained. All results, including renormalization terms, are finite. |
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