Radiative-nonrecoil corrections of order {alpha}{sup 2}(Z{alpha}){sup 5} to the Lamb shift

Radiative-nonrecoil corrections of order {alpha}{sup 2}(Z{alpha}){sup 5} to the Lamb shift

We present results for the corrections of order {alpha}{sup 2}(Z{alpha}){sup 5} to the Lamb shift. We compute all the contributing Feynman diagrams in dimensional regularization and a general covariant gauge using a mixture of analytical and numerical methods. We confirm results obtained by other gr...

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Veröffentlicht in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2010-02, Vol.81 (2)
Hauptverfasser: Dowling, Matthew, Mondejar, Jorge, Piclum, Jan H., Czarnecki, Andrzej
Format: Artikel
Sprache:eng
Schlagworte:
ACCURACY
CORRECTIONS
DIAGRAMS
FEYNMAN DIAGRAM
INFORMATION
INTEGRALS
LAMB SHIFT
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
SPECTRAL SHIFT
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Zusammenfassung:We present results for the corrections of order {alpha}{sup 2}(Z{alpha}){sup 5} to the Lamb shift. We compute all the contributing Feynman diagrams in dimensional regularization and a general covariant gauge using a mixture of analytical and numerical methods. We confirm results obtained by other groups and improve their precision. Values of the 32''master integrals'' for this and similar problems are provided.
ISSN:1050-2947
1094-1622
DOI:10.1103/PHYSREVA.81.022509