Alternatives to the stochastic "noise vector" approach
High Energy Physics - Lattice
2018-04-18 v1
Abstract
Several important observables, like the quark condensate and the Taylor coefficients of the expansion of the QCD pressure with respect to the chemical potential, are based on the trace of the inverse Dirac operator and of its powers. Such traces are traditionally estimated with "noise vectors" sandwiching the operator. We explore alternative approaches based on polynomial approximations of the inverse Dirac operator.
Cite
@article{arxiv.1710.07305,
title = {Alternatives to the stochastic "noise vector" approach},
author = {Philippe de Forcrand and Benjamin Jaeger},
journal= {arXiv preprint arXiv:1710.07305},
year = {2018}
}
Comments
Eight pages, thirteen figures. Proceedings of the 35th International Symposium on Lattice Field Theory