Evidence of Instanton Effects in Hadrons from the Study of Low Eigenfunctions of the Dirac Operator
arXiv:hep-lat/9709130 · doi:10.1016/S0920-5632(97)00815-3
Abstract
To elucidate the role in hadron structure of quark zero modes associated with instantons, the lowest eigenfunctions of the Dirac operator have been calculated in quenched QCD, full QCD, and full QCD with cooling. Eigenmodes associated with a single instanton and an instanton-anti-instanton pair were studied to understand the role of lattice artifacts for Wilson Fermions. By truncating the spectral representation of the quark propagator, we show that the rho and pion contributions to the vector and pseudoscalar correlation functions are dominated by the zero-mode contributions.
Email to [email protected]; 3 pages, 2 eps figures; submitted to Lattice'97 (Edinburgh) Proceedings; Correction: uses espcrc2.sty, BoxedEPS macros; Note: only these comments have been revised, text is same as first submission
Cited by in corpus (29)
- High Density QCD and Instantons
- Moments of Nucleon Light Cone Quark Distributions Calculated in Full Lattice QCD
- Light Quarks in the Instanton Vacuum at Finite Baryon Density
- On the low fermionic eigenmode dominance in QCD on the lattice
- Instantons, the QCD Vacuum, and Hadronic Physics
- Exploring the structure of the quenched QCD vacuum with overlap fermions
- Low-lying fermion modes, topology and light hadrons in quenched QCD
- Instanton Content of the SU(3) Vacuum
- Short distance current correlators: Comparing lattice simulations to the instanton liquid
- New findings for topological excitations in SU(3) lattice gauge theory
- Meron Pairs and Fermion Zero Modes
- Vacuum structure revealed by over-improved stout-link smearing compared with the overlap analysis for quenched QCD
- A comprehensive picture of topological excitations in finite temperature lattice QCD
- Calorons, instantons and constituent monopoles in SU(3) lattice gauge theory
- Evidence Against Instanton Dominance of Topological Charge Fluctuations in QCD
- Testing the self-duality of topological lumps in SU(3) lattice gauge theory
- Properties of near-zero modes and chiral symmetry breaking
- Quark zero modes in intersecting center vortex gauge fields
- Instanton dominance of topological charge fluctuations in QCD?
- Confinement and Chiral Symmetry Breaking via Domain-Like Structures in the QCD Vacuum
- Instanton Contribution to the Pion Electro-Magnetic Formfactor at Q^2 > 1 GeV^2
- Topological lumps and Dirac zero modes in SU(3) lattice gauge theory on the torus
- Exploring the Chiral Regime of QCD in the Interacting Instanton Liquid Model
- Moments of Structure Functions in Full QCD
- Direct Instantons and Nucleon Magnetic Moments
- Instanton Content of the SU(3) Vacuum
- On Chiral Symmetry Breaking, Topology and Confinement
- Study of Instanton Contributions to Moments of Nucleon Spin-Dependent Structure Functions
- On the chirality of quark modes