Understanding chiral symmetry breaking with the overlap action
High Energy Physics - Lattice
2007-05-23 v1
Abstract
A chiral fermion action allows one to do very clean studies of chiral symmetry breaking in QCD. I will briefly describe how to compute with the overlap action (relatively) cheaply, and then turn to physics: Low modes of the Dirac operator show a ``lumped'' chiral density which peaks at the locations of instantons and anti-instantons. These modes dominate correlation functions at small quark mass in many channels. The picture qualitatively (and in some cases quantitatively) resembles an instanton liquid model.
Keywords
Cite
@article{arxiv.hep-lat/0110005,
title = {Understanding chiral symmetry breaking with the overlap action},
author = {Thomas DeGrand},
journal= {arXiv preprint arXiv:hep-lat/0110005},
year = {2007}
}
Comments
Lattice2001(confinement)