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Perturbation theory at large order: The choice of integration contour
Authors:Davison E. Soper
Affiliation:Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403, USA
Abstract:I discuss two technical points in the method of Lipatov for extracting the large-order behavior of field theories. The first is an adjustment of the integration contour required to make the action bounded below. The second is a method for treating fluctuations in the coupling constant exactly.
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