Lattice quark propagator with staggered quarks in Landau and Laplacian gauges

Abstract

We report on the lattice quark propagator using standard and improved Staggered quark actions, with the standard, Wilson gauge action. The standard Kogut-Susskind action has errors of \oa{2} while the ``Asqtad'' action has \oa{4}, \oag{2}{2} errors. The quark propagator is interesting for studying the phenomenon of dynamical chiral symmetry breaking and as a test-bed for improvement. Gauge dependent quantities from lattice simulations may be affected by Gribov copies. We explore this by studying the quark propagator in both Landau and Laplacian gauges. Landau and Laplacian gauges are found to produce very similar results for the quark propagator.

11 pages, 15 figures

References in corpus (12)

• Variants of fattening and flavor symmetry restoration
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• Infinite Volume and Continuum Limits of the Landau-Gauge Gluon Propagator
• Nonperturbative improvement and tree-level correction of the quark propagator
• Quark propagator in the Landau gauge
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• Overlap Quark Propagator in Landau Gauge
• The Gluon Propagator without lattice Gribov copies
• Light Quark Masses from Lattice Quark Propagators at Large Momenta
• The Gluon Propagator without lattice Gribov copies on a finer lattice
• Lattice Quark Propagator in Landau and Laplacian Gauges
• Quark propagator from an improved staggered action in Laplacian and Landau gauges

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