WILSON'S EXPANSION WITH POWER ACCURACY
High Energy Physics - Phenomenology
2007-05-23 v1 High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
Because of the infrared renormalons, it is difficult to get power accuracy in the traditional approach to the Wilson's operator product expansion. Based on a new perturbative renormalization scheme for power-divergent operators, I propose a practical version of the OPE that allows to calculate power corrections to desired accuracy. The method is applied to the expansion of the vector-current correlation function in QCD vacuum, in which field theoretical status of the gluon condensate is discussed.
Keywords
Cite
@article{arxiv.hep-ph/9506216,
title = {WILSON'S EXPANSION WITH POWER ACCURACY},
author = {Xiangdong Ji},
journal= {arXiv preprint arXiv:hep-ph/9506216},
year = {2007}
}
Comments
8 pages in REVTEX