Journal
PHYSICAL REVIEW A
Volume 71, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.71.040101
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The two-loop self-energy correction is evaluated to all orders in Z alpha for the ground-state Lamb shift of H-like ions with Z >= 10, where Z is the nuclear charge number and alpha is the fine-structure constant. The results obtained are compared with the analytical values for the Z alpha-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.
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