Lattice QCD ensembles with four flavors of highly improved staggered quarks

A. Bazavov; C. Bernard; J. Komijani; C. Detar; L. Levkova; W. Freeman; Steven Gottlieb; Ran Zhou; U. M. Heller; J. E. Hetrick; J. Laiho; J. Osborn; R. L. Sugar; D. Toussaint; R. S. Van De Water

doi:10.1103/PhysRevD.87.054505

Lattice QCD ensembles with four flavors of highly improved staggered quarks

A. Bazavov, C. Bernard, J. Komijani, C. Detar, L. Levkova, W. Freeman, Steven Gottlieb, Ran Zhou, U. M. Heller, J. E. Hetrick, J. Laiho, J. Osborn, R. L. Sugar, D. Toussaint, R. S. Van De Water

Research output: Contribution to journal › Article › peer-review

258 Scopus citations

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.

Original language	English (US)
Article number	054505
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	87
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.87.054505
State	Published - Mar 14 2013
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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Bazavov, A., Bernard, C., Komijani, J., Detar, C., Levkova, L., Freeman, W., Gottlieb, S., Zhou, R., Heller, U. M., Hetrick, J. E., Laiho, J., Osborn, J., Sugar, R. L., Toussaint, D., & Van De Water, R. S. (2013). Lattice QCD ensembles with four flavors of highly improved staggered quarks. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87(5), [054505]. https://doi.org/10.1103/PhysRevD.87.054505

Bazavov, A, Bernard, C, Komijani, J, Detar, C, Levkova, L, Freeman, W, Gottlieb, S, Zhou, R, Heller, UM, Hetrick, JE, Laiho, J, Osborn, J, Sugar, RL, Toussaint, D & Van De Water, RS 2013, 'Lattice QCD ensembles with four flavors of highly improved staggered quarks', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 87, no. 5, 054505. https://doi.org/10.1103/PhysRevD.87.054505

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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.",

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AU - Bazavov, A.

AU - Bernard, C.

AU - Komijani, J.

AU - Detar, C.

AU - Levkova, L.

AU - Freeman, W.

AU - Gottlieb, Steven

AU - Zhou, Ran

AU - Heller, U. M.

AU - Hetrick, J. E.

AU - Laiho, J.

AU - Osborn, J.

AU - Sugar, R. L.

AU - Toussaint, D.

AU - Van De Water, R. S.

PY - 2013/3/14

Y1 - 2013/3/14

N2 - 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.

AB - 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.

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Lattice QCD ensembles with four flavors of highly improved staggered quarks

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