Maqola

Unquenched quark propagator in Landau gauge

Patrick O. BowmanNuclear Theory Center, Indiana University, Bloomington Indiana 47405, USAUrs M. HellerAmerican Physical Society, One Research Road, Box 9000, Ridge, New York 11961-9000, USADerek B. LeinweberSpecial Research Centre for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide, SA 5005, AustraliaMaria ParappillySpecial Research Centre for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide, SA 5005, AustraliaAnthony G. WilliamsSpecial Research Centre for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide, SA 5005, AustraliaJianbo ZhangSpecial Research Centre for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide, SA 5005, Australia

2005en

ABI

Annotatsiya

We present an unquenched calculation of the quark propagator in Landau gauge with $2\text{\hskip-0.22em}+\text{\hskip-0.22em}1$ flavors of dynamical quarks. We use configurations generated with an improved staggered (``Asqtad'') action by the MILC Collaboration. This quark action has been seen to have excellent rotational symmetry and scaling properties in the quenched quark propagator. Quenched and dynamical calculations are performed on a ${20}^{3}\ifmmode\times\else\texttimes\fi{}64$ lattice with a nominal lattice spacing of $a=0.125\text{ }\text{ }\mathrm{fm}$. The matched quenched and dynamical lattices allow us to investigate the relatively subtle sea-quark effects, and even in the quenched case the physical volume of these lattices gives access to lower momenta than our previous study. We calculate the quark mass function and renormalization function for a variety of valence and sea-quark masses.

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Identifikatorlar

DOI: 10.1103/physrevd.71.054507

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