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

Abstract

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.

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

References in corpus (3)

• Baryonic Correlation Functions in the Random Instanton Vacuum
• Mesonic Correlation Functions in the Random Instanton Vacuum
• Correlation Functions of Hadron Currents in the QCD Vacuum Calculated in Lattice QCD

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• Topological Structure in the SU(2) Vacuum
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• Surface states and chiral symmetry on the lattice
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• Topology at the Deconfinement Transition Uncovered by Inverse Blocking in SU(2) Pure Gauge Theory with Fixed Point Action
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