Methods for Pseudoscalar Flavour-Singlet Mesons with Staggered Fermions

We present the first 2+1 flavour lattice QCD calculations of pseudoscalar flavour-singlet propagators using improved staggered fermions. We explore the relevant techniques and discuss prospects for the larger scale studies now in progress. The disconnected correlator is shown to have a highly non-Ga...

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Bibliographic Details
Published in:arXiv.org 2007-09
Main Authors: Gregory, Eric B, Irving, Alan C, Richards, Chris M, McNeile, Craig
Format: Article
Language:English
Subjects:
Fermions
Gaussian distribution
Mesons
Normal distribution
Quantum chromodynamics
Online Access:Get full text
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Summary:We present the first 2+1 flavour lattice QCD calculations of pseudoscalar flavour-singlet propagators using improved staggered fermions. We explore the relevant techniques and discuss prospects for the larger scale studies now in progress. The disconnected correlator is shown to have a highly non-Gaussian distribution and reliable estimates of the errors require care.
ISSN:2331-8422
DOI:10.48550/arxiv.0709.4224