Low-lying Eigenvalues of the improved Wilson-Dirac Operator in QCD

Abstract

The spectral flow of the low-lying eigenvalues of the improved and unimproved Wilson-Dirac operator is studied on instanton-like configurations and on thermalized quenched configurations at various $\beta$-values and lattice sizes. We also investigate the space-time localisation and chirality of the corresponding eigenvectors.

7 pages, Latex, 2 Postscript figures (included using epsfig) Conference Proceedings, 31st International Symposium Ahrenshoop on the Theory of Elementary Particles, Buckow, September 2-6, 1997