Spectrum of the Dirac Operator and Inversion Algorithms with Dynamical Staggered Fermions

Abstract

Complete spectra of the staggered Dirac operator $\text{Dirac}$ 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~$\text{Dirac}$.

Comments: 3 pages, 1 figure, uuencoded tar-compressed .ps-file, contribution to LATTICE'94, report# HUB-IEP-94/22