Renormalon Subtraction from the Average Plaquette and the Gluon Condensate

Abstract

A Borel resummation scheme of subtracting the perturbative contribution from the average plaquette is proposed using the bilocal expansion of Borel transform. It is shown that the remnant of the average plaquette, after subtraction of the perturbative contribution, scales as a dim-4 condensate. A critical review of the existing procedure of renormalon subtraction is presented.Comment: 7pages,one figure; Journal version (added references and introductory remarks