A study of the sign problem for lattice QCD with chemical potential
High Energy Physics - Lattice
2009-11-23 v2
Abstract
We study the expectation value of the phase of the fermion determinant for Wilson lattice fermions with chemical potential. We use quenched SU(3) ensembles and implement a recently proposed exact dimensional reduction of the fermion determinant. Ensembles at several temperatures below and above the phase transition are studied and we analyze the role of the quark mass, the temperature, the volume and the topological sectors. We compare our numerical results to predictions from chiral perturbation theory.
Keywords
Cite
@article{arxiv.0907.3084,
title = {A study of the sign problem for lattice QCD with chemical potential},
author = {Julia Danzer and Christof Gattringer and Ludovit Liptak and Marina Marinkovic},
journal= {arXiv preprint arXiv:0907.3084},
year = {2009}
}
Comments
Statistical errors for fit parameters and a footnote added. Final version to appear in Physics Letters B