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Published June 25, 1973 | public
Journal Article Open

Reliable Perturbative Results for Strong Interactions?


An explicit calculation shows perturbation theory to be arbitrarily good for the deep Euclidean Green's functions of any Yang-Mills theory and of many Yang-Mills theories with fermions. Under the hypothesis that spontaneous symmetry breakdown is of dynamical origin, these symmetric Green's functions are the asymptotic forms of the physically significant spontaneously broken solution, whose coupling could be strong.

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©1973 The American Physical Society Received 3 May 1973 The author thanks Sidney Coleman and Erick Weinberg, who have offered insights and advice freely, and the latter especially for his help in the computations. Work supported in part by the U.S. Air Force Office of Scientific Research under Contract No. F44620-70-C-0030.


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