Delocalized Operator Expansion

Abstract

A generalization of Wilson's local OPE for the short-distance expansion of Euclidean current correlators, called delocalized operator expansion (DOE), which has been proposed recently, is discussed. The DOE has better convergence properties than the OPE and can account for non-local non-perturbative QCD effects.

Comments: 5 pages, LaTeX, espcrc2_my.sty. Talk presented at QCD 02, Montpellier, France, July 2-9, 2002 and the 6th International Symposium on Radiative Corrections (RadCor 2002), Kloster Banz, Germany, September 8-13, 2002