Complete spectra of the staggered Dirac operator \Dirac are determined in four-dimensional SU(2) gauge fields with and without dynamical fermions. An attempt is made to relate the performance of multigrid and conjugate gradient algorithms for propagators with the distribution of the eigenvalues of~\Dirac.
@article{arxiv.hep-lat/9410006,
title = {Spectrum of the Dirac Operator and Inversion Algorithms with Dynamical Staggered Fermions},
author = {Thomas Kalkreuter},
journal= {arXiv preprint arXiv:hep-lat/9410006},
year = {2009}
}