Topological effects in QCD and the problem of short-distance singularities
High Energy Physics - Theory
2009-11-10 v2 High Energy Physics - Lattice
Abstract
The topological susceptibility and the higher moments of the topological charge distribution in QCD are expressed through certain n-point functions of the scalar and pseudo-scalar quark densities at vanishing momenta, which are free of short-distance singularities. Since the normalization of the correlation functions is determined by the non-singlet chiral Ward identities, these formulae provide an unambiguous regularization-independent definition of the moments and thus of the charge distribution.
Keywords
Cite
@article{arxiv.hep-th/0404034,
title = {Topological effects in QCD and the problem of short-distance singularities},
author = {Martin Lüscher},
journal= {arXiv preprint arXiv:hep-th/0404034},
year = {2009}
}
Comments
Plain TeX source, 10 pages, reference added, version published in PLB