Lattice QCD ensembles with four flavors of highly improved staggered quarks

Bazavov, A. et al. (2013) Lattice QCD ensembles with four flavors of highly improved staggered quarks. Physical Review D, 87(5), 054505. (doi: 10.1103/PhysRevD.87.054505)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevD.87.054505

Abstract

We present results from our simulations of quantum chromodynamics with four flavors of quarks: u, d, s, and c. These simulations are performed with a one-loop Symanzik improved gauge action and the highly improved staggered quark action. We are generating gauge configurations with four values of the lattice spacing ranging from 0.06 to 0.15 fm, and three values of the light quark mass, including the value for which the Goldstone pion mass is equal to the physical pion mass. We discuss simulation algorithms, scale setting, taste symmetry breaking, and the autocorrelations of various quantities. We also present results for the topological susceptibility that demonstrate the improvement of the highly improved staggered quark configurations relative to those generated earlier with the asqtad improved staggered action.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Laiho, Dr John
Authors: Bazavov, A., Bernard, C., Komijani, J., DeTar, C., Levkova, L., Freeman, W., Gottlieb, S., Zhou, R., Heller, U., Hetrick, J., Laiho, J., Osborn, J., Sugar, R., Toussaint, D., and Van de Water, R.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1550-2368

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
481951Investigations in Quantum Chromodynamics and Physics Beyond the Standard ModelChristine DaviesScience & Technologies Facilities Council (STFC)ST/G00059X/1P&A - PHYSICS & ASTRONOMY
573721Phenomenology from Lattice QCD and Collider PhysicsChristine DaviesScience & Technologies Facilities Council (STFC)ST/J000442/1P&A - PHYSICS & ASTRONOMY