%0 Journal Article
%T Renormalon's Contribution to Effective Couplings
%A Hiroshi Suzuki
%J Physics
%D 1997
%I arXiv
%R 10.1142/S0217732398002710
%X When an asymptotically non-free theory possesses a mass parameter, the ultraviolet (UV) renormalon gives rise to non-perturbative contributions to dimension-four operators and dimensionless couplings, thus has a similar effect as the instanton. We illustrate this phenomenon in O(N) symmetric massive $\lambda\phi^4$ model in the $1/N$ expansion. This effect of UV renormalon is briefly compared with non-perturbative corrections in the magnetic picture of the Seiberg-Witten theory.
%U http://arxiv.org/abs/hep-th/9710013v2