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Two-time Green function method in quantum electrodynamics of high-Z few-electron atoms | | V.M. Shabaev
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5 Sep 2000 | | Journal: | Physics Reports 356 (2002) 119-228. | | Subject: | Atomic Physics | physics.atom-ph | | Abstract: | The two-time Green function method in quantum electrodynamics of high-Z few-electron atoms is described in detail. This method provides a simple procedure for deriving formulas for the energy shift of a single level and for the energies and wave functions of degenerate and quasi-degenerate states. It also allows one to derive formulas for the transition and scattering amplitudes. Application of the method to resonance scattering processes yields a systematic theory for the spectral line shape. The practical ability of the method is demonstrated by deriving formulas for the QED and interelectronic-interaction corrections to energy levels and transition and scattering amplitudes in one-, two-, and three-electron atoms. Numerical calculations of the Lamb shift, the hyperfine splitting, the bound-electron g factor, and the radiative recombination cross section in heavy ions are also reviewed. | | Source: | arXiv, physics/0009018 | | Services: | Forum | Review | PDF | Favorites | |
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