Renormalization group improvement of the spectrum of Hydrogen-like atoms with massless fermions

Details Renormalization group improvement of the spectrum of Hydrogen-like atoms with massless fermions Renormalization group improvement of the spectrum of Hydrogen-like atoms with massless fermions

2002-04-18

arxiv.org/abs/hep-ph/0204213v2

Phys.Rev. A66 (2002) 062108

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX. Minor changes, note added, final version

Scientific paper

10.1103/PhysRevA.66.062108

We obtain the next-to-next-to-leading-log renormalization group improvement of the spectrum of Hydrogen-like 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 logs at O(m\alpha^6). We compare with other formalisms dealing with log resummation available in the literature.

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