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Type: Journal article
Title: Unquenched quark propagator in Landau gauge
Author: Bowman, P.
Heller, U.
Leinweber, D.
Parappilly, M.
Williams, A.
Zhang, J.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2005; 71(5):054507-1-054507-7
Publisher: American Physical Soc
Issue Date: 2005
ISSN: 1550-7998
Statement of
Patrick O. Bowman, Urs M. Heller, Derek B. Leinweber, Maria B. Parappilly, Anthony G. Williams, and Jianbo Zhang
Abstract: We present an unquenched calculation of the quark propagator in Landau gauge with 2+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 203×64 lattice with a nominal lattice spacing of a=0.125 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.
Rights: ©2005 American Physical Society
RMID: 0020050311
DOI: 10.1103/PhysRevD.71.054507
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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