Dirac Eigenmodes in an Environment of Dynamical Fermions

Abstract

We discuss some properties of zero and near-zero modes of the Dirac operator, as observed in a recent simulation of 2-flavor QCD. The quarks have been implemented with the so-called Chirally Improved Dirac operator, which obeys the Ginsparg-Wilson relation to a good approximation. We present geometrical and statistical properties of these eigenmodes and eigenvalues.

Comments: 8 pages, 5 figures, Contribution to "Sense of beauty in physics," 26-27 Jan. 2006, Univ. Pisa; minor change