Two-loop QED corrections in few-electron ions

Abstract

Results of a calculation valid to all orders in the nuclear-strength parameter Zαare presented for the two-loop Lamb shift, notably for the two-loop self-energy correction, for the ground and first excited states of ions with the nuclear charge numbers Z=60-100. A detailed comparison of the all-order calculation with earlier investigations based on an expansion in the parameter Zαis given. The calculation removes the largest theoretical uncertainty for the 2p_j-2s transition energies in heavy Li-like ions and is important for interpretation of experimental data.

talk at PSAS 2006, Venice, Italy

References in corpus (13)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Relativistic nuclear recoil corrections to the energy levels of hydrogen-like and high $Z$ lithium like atoms in all orders in $\alpha Z$
• CORRECTIONS OF ORDER ${\alpha }^2(Z\alpha {)}^5$ TO HYPERFINE SPLITTING AND LAMB SHIFT
• Two-loop self-energy correction in high-Z hydrogen-like ions
• Two-Loop Bethe Logarithms
• Logarithmic two-loop corrections to the Lamb shift in hydrogen
• Nuclear recoil corrections to the $2p_{\frac{3}{2}}$ state energy of hydrogen-like and high $Z$ lithium like atoms in all orders in $\alpha Z$
• Calculation of the One- and Two-Loop Lamb Shift for Arbitrary Excited Hydrogenic States
• Radiative energy shifts induced by local potentials
• Evaluation of the two-photon exchange diagrams for the $(1s{)}^{2}2p_{3/2}$ electron configuration in Li-like ions
• Two-Loop Bethe Logarithms for non-S Levels
• Leading logarithmic contribution to the second-order Lamb shift induced by the loop-after-loop diagram
• Two-Loop Bethe Logarithms for Higher Excited S Levels

Cited by in corpus (4)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Relativistic recoil, electron-correlation, and QED effects on the 2p_j-2s transition energies in Li-like ions
• Ground-state ionization energies of boronlike ions
• The Muon Experimental Anomalies Are Explained by a New Interaction Proportional to Charge