Evidence for the Role of Instantons in Hadron Structure from Lattice QCD

Details Evidence for the Role of Instantons in Hadron Structure from Lattice QCD Evidence for the Role of Instantons in Hadron Structure from Lattice QCD

1993-12-17

arxiv.org/abs/hep-lat/9312071v2

Phys.Rev.D49:6039-6050,1994

Physics

High Energy Physics

High Energy Physics - Lattice

26 pages in REVTeX, plus 10 figures, uuencoded. Submitted to Physical Review D. MIT-CTP-2269

Scientific paper

10.1103/PhysRevD.49.6039

Cooling is used as a filter on a set of gluon fields sampling the Wilson action to selectively remove essentially all fluctuations of the gluon field except for the instantons. The close agreement between quenched lattice QCD results with cooled and uncooled configurations for vacuum correlation functions of hadronic currents and for density-density correlation functions in hadronic bound states provides strong evidence for the dominant role of instantons in determining light hadron structure and quark propagation in the QCD vacuum.

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