Analytic results for the two-loop renormalization constants of Feynman gauge QED
The two-loop renormalization constants $Z_m$ and $Z_1\!=\!Z_2$ of Feynman gauge quantum electrodynamics (QED) in the on-shell scheme are computed using dimensional regularization. Analytic results are obtained for these constants. In addition, analytic expressions are obtained for their expansion coefficients in the dimensional regularization parameter $ε$ from order $1/ε^2$ through order $ε^5$. The high-order expansion coefficients will be needed for future multiloop calculations in QED and will provide a useful check for multiloop calculations in QCD.
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