Instanton Dominance of Topological Charge Fluctuations in QCD? (CROSBI ID 112671)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Hip, Ivan ; Lippert, Thomas ; Neff, Hartmut ; Schilling, Klaus ; Schroers, Wolfram
engleski
Instanton Dominance of Topological Charge Fluctuations in QCD?
We consider the local chirality of near-zero eigenvectors from Wilson-Dirac and clover improved Wilson-Dirac lattice operators as proposed recently by Horvath et al. We studied finer lattices and repaired for the loss of orthogonality due to the non-normality of the Wilson-Dirac matrix. As a result we do see a clear double peak structure on lattices with resolutions higher than 0.1 fm. We found that the lattice artifacts can be considerably reduced by exploiting the biorthogonal system of left and right eigenvectors. We conclude that the dominance of instantons on topological charge fluctuations is not ruled out by local chirality measurements.
Dirac operators ; eigenvectors ; instantons
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
65 (1)
2001.
014506
5
objavljeno
0556-2821
1089-4918
10.1103/PhysRevD.65.014506