Future of Lattice Calculations with Staggered Sea Quarks

Journal Article · Mon May 23 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3574949· OSTI ID:21516984

Gottlieb, Steven ^[1]

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1. Department of Physics, Indiana University, Bloomington IN 47405 (United States)

The MILC collaboration for some years has been creating gauge ensembles with 2+1 flavors of asqtad or improved staggered quarks. There are some 40 ensembles covering a wide range of quark mass and lattice spacing, thus allowing control of the chiral and continuum limits. An extensive review of that program has been published in Reviews of Modern Physics. Recently, MILC has begun a new program using HPQCD's highly improved staggered quark (HISQ) action. This action has smaller taste symmetry breaking than asqtad and improved scaling properties. We also include a dynamical charm quark in these calculations. We summarize the achievements of the asqtad program, what has been done so far with HISQ quarks, and then consider what future ensembles will be created and their impact.

• OSTI ID: 21516984
• Journal Information: AIP Conference Proceedings, Vol. 1343, Issue 1; Conference: QCHS 9: 9. international conference on quark confinement and the hadron spectrum, Madrid (Spain), 30 Aug - 3 Sep 2010; Other Information: DOI: 10.1063/1.3574949; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
CHIRALITY
FLAVOR MODEL
LATTICE FIELD THEORY
MASS
QUARK MATTER
QUARKS
SCALING
SYMMETRY BREAKING
TOPOLOGY
COMPOSITE MODELS
CONSTRUCTIVE FIELD THEORY
FERMIONS
FIELD THEORIES
MATHEMATICAL MODELS
MATHEMATICS
MATTER
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
QUARK MODEL
SYMMETRY