Exploring the Chiral Regime of QCD in the Interacting Instanton Liquid Model

Abstract

The Interacting Instanton Liquid Model is used to explore the role of instanton induced dynamics in hadron structure. To support the validity of this model in the chiral regime, the quark mass dependencies of several properties are shown to agree with chiral perturbation theory, including the density of eigenmodes of the Dirac operator and the masses of the pion and nucleon. A quark mass m* = 80 MeV emerging naturally from the model is shown to specify the mass scale above which the fermion determinant is suppressed, the zero modes become subdominant, and the density of quasi-zero modes become independent of the quark mass.

Substantial revision with improved analysis and discussion

References in corpus (2)

• Nucleon mass: from lattice QCD to the chiral limit
• Cutoff schemes in chiral perturbation theory and the quark mass expansion of the nucleon mass

Cited by in corpus (7)

• Low energy constants of \chiPT from the instanton vacuum model
• QCD Topology at Finite Temperature: Statistical Mechanics of Selfdual Dyons
• Electromagnetic form factors of the pion and kaon from the instanton vacuum
• 1/N_c corrections to the magnetic susceptibility of the QCD vacuum
• Light scalar mesons in QCD sum rules with inclusion of instantons
• Instantons, Chiral Dynamics and Hadronic Resonances
• Instanton effects on the twist-three light-cone distribution amplitudes of pion and light scalar mesons above 1GeV