Contribution of the screened self-energy to the Lamb shift of quasidegenerate states
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چکیده
Expressions for the effective Quantum Electrodynamics (QED) Hamiltonian due to self-energy screening (self-energy correction to the electron-electron interaction) are presented. We use the method of the two-time Green’s function, which handles quasidegenerate atomic states. From these expression one can evaluate energy corrections to, e.g., 1s2p 3P1 and 1s2p 1P1 in helium and twoelectron ions, to all orders in Zα.
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تاریخ انتشار 2000