Wess-Zumino term by Vacuum Overlap Formula
High Energy Physics - Lattice
2009-10-28 v1
Abstract
We examine the vacuum overlap formula for the two-dimensional SU(2) Wess-Zumino term in lattice regularization. Perturbatively it reproduces the Wess-Zumino term correctly in the continuum limit and yields the IR fixed point in the beta function of the chiral model. Nonperturbatively it shows a sharp Gaussian distribution for the SU(2) chiral field configurations in the scaling region, where smooth configurations dominate even in the symmetric phase due to asymptotic freedom. Crossover is sharp from the strong coupling region where the Wess-Zumino term fluctuates hard and the species doublers' contribution is suspected to affect it.
Keywords
Cite
@article{arxiv.hep-lat/9608137,
title = {Wess-Zumino term by Vacuum Overlap Formula},
author = {Y. Kikukawa and S. Miyazaki},
journal= {arXiv preprint arXiv:hep-lat/9608137},
year = {2009}
}
Comments
21 LaTeX pages with 9 postscript figures, ptptex.sty included