Understanding chiral symmetry breaking with the overlap action

Details Understanding chiral symmetry breaking with the overlap action Understanding chiral symmetry breaking with the overlap action

2001-10-02

arxiv.org/abs/hep-lat/0110005v1

Nucl.Phys.Proc.Suppl. 106 (2002) 566-568

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2001(confinement)

Scientific paper

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.

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