Insight into Hadron Structure from Lattice QCD
Abstract
A variety of evidence from lattice QCD is presented revealing the dominant role of instantons in the propagation of light quarks in the QCD vacuum and in light hadron structure. The instanton content of lattice gluon configurations is extracted, and observables calculated from the instantons alone are shown to agree well with those calculated using all gluons. The lowest 128 eigenfunctions of the Dirac operator are calculated and shown to exhibit zero modes localized at the instantons. Finally, the zero mode contributions to the quark propagator alone are shown to account for essentially the full strength of the rho and pion resonances in the vector and pseudoscalar correlation functions.
Keywords
Cite
@article{arxiv.hep-lat/9709129,
title = {Insight into Hadron Structure from Lattice QCD},
author = {J. W. Negele},
journal= {arXiv preprint arXiv:hep-lat/9709129},
year = {2009}
}
Comments
Email to negele@mitlns.mit.edu; 15 pages, 5 eps figures; Correction: LaTeX, BoxedEPS macros; Paper to appear in Proceedings of the Sixth Conference on the Intersections of Particle and Nuclear Physics. Only these Comments have been revised, text is identical to original submission