The Two-Loop Euler-Heisenberg Lagrangian in Dimensional Renormalization
Denny Fliegner, Martin Reuter, Michael G. Schmidt, Christian Schubert
Abstract
We clarify a discrepancy between two previous calculations of the two-loop QED Euler-Heisenberg Lagrangian, both performed in proper-time regularization, by calculating this quantity in dimensional regularization.
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