Phys. Rev. A 71, 040101(R) (2005) [4 pages]Two-loop self-energy contribution to the Lamb shift in H-like ions
The two-loop self-energy correction is evaluated to all orders in Zα for the ground-state Lamb shift of H-like ions with Z⩾10, where Z is the nuclear charge number and α is the fine-structure constant. The results obtained are compared with the analytical values for the Zα-expansion coefficients. An extrapolation of the all-order numerical results to Z=1 is presented and implications of our calculation for the hydrogen Lamb shift are discussed. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.040101
DOI:
10.1103/PhysRevA.71.040101
PACS:
31.30.Jv, 31.10.+z
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