Phys. Rev. A 66, 062108 (2002) [5 pages]Renormalization-group improvement of the spectrum of hydrogenlike atoms with massless fermionsReceived 30 April 2002; published 18 December 2002 We obtain the next-to-next-to-leading-logarithmic renormalization-group improvement of the spectrum of hydrogenlike atoms with massless fermions by using potential NRQED. These results can also be applied to the computation of the muonic hydrogen spectrum where we are able to reproduce some known double logarithms at O(mαs6). We compare with other formalisms dealing with logarithmic resummation available in the literature. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.062108
DOI:
10.1103/PhysRevA.66.062108
PACS:
12.20.Ds, 11.10.St, 11.10.Hi, 12.38.Cy
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