Two-photon-exchange corrections to the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>g</mml:mi></mml:math> factor of Li-like ions

Screened QED corrections to the g factor of Li-like ions

The screened QED corrections to the g factor of Li-like ions are evaluated utilizing an effective potential approach. The evaluation is performed within the range of nuclear charge numbers Z = 32 – 92. The results obtained serve for improving the theoretical predictions for the g factor of heavy Li-like ions. PACS numbers: 12.20.Ds, 31.30.Jv, 31.30.Gs

NLO corrections to the photon impact factor

We review the program of the calculation of next-to-leading order corrections to the virtual photon impact factor. Following a brief introduction we present some technical aspects for the various contributions. Recently obtained results for transversely polarised virtual photons are discussed and an outline of how infrared divergences are cancelled is given. Implications of the subtraction of l...

Variational calculation for the ground state of lithium and the QED corrections for Li-like ions.

Hyperfine structure and g factor in heavy Li-like ions: rigorous evaluation of the screened QED corrections

Investigations of the hyperfine splitting and the g factor in highly charged ions give an access to a test of boundstate QED in strongest electromagnetic fields available at present for experimental study. To date, accurate measurements of the ground-state hyperfine structure and of the g factor were performed in H-like ions. An extention of such kind of experiments to highly charged Li-like io...

Erratum: Variational calculation for the ground state of lithium and QED corrections for Li-like ions