Cutoff-effects in the spectrum of dynamical Wilson fermions
High Energy Physics - Lattice
2009-11-10 v1
Abstract
We investigate the low-lying eigenvalues of the improved Wilson-Dirac operator in the Schroedinger functional with two dynamical quark flavors. At a lattice spacing of approximately 0.1 fm we find more very small eigenvalues than in the quenched case. These cause problems with HMC-type algorithms and in the evaluation of fermionic correlation functions. Through a simulation at a finer lattice spacing we are able to establish their nature as cutoff-effects
Keywords
Cite
@article{arxiv.hep-lat/0409005,
title = {Cutoff-effects in the spectrum of dynamical Wilson fermions},
author = {M. Della Morte and R. Hoffmann and F. Knechtli and U. Wolff},
journal= {arXiv preprint arXiv:hep-lat/0409005},
year = {2009}
}
Comments
Lattice2004(machines), 3 pages, 3 figures, talk by R.H