Abstract
The two-loop self-energy correction is evaluated to all orders in for the ground-state Lamb shift of H-like ions with , where is the nuclear charge number and is the fine-structure constant. The results obtained are compared with the analytical values for the -expansion coefficients. An extrapolation of the all-order numerical results to is presented and implications of our calculation for the hydrogen Lamb shift are discussed.
- Received 14 February 2005
DOI:https://doi.org/10.1103/PhysRevA.71.040101
©2005 American Physical Society