Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/11144
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Type: Journal article
Title: Overlap quark propagator in the Landau gauge
Author: Bonnet, F.
Bowman, P.
Leinweber, D.
Williams, A.
Zhang, J.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2002; 65(11):114503-1-114503-13
Publisher: American Physical Soc
Issue Date: 2002
ISSN: 1550-7998
0556-2821
Statement of
Responsibility: 
Frédéric D. R. Bonnet, Patrick O. Bowman, Derek B. Leinweber, Anthony G. Williams, and J. B. Zhang
Abstract: The properties of the quark propagator in the Landau gauge in quenched QCD are examined for the overlap quark action. The overlap quark action satisfies the Ginsparg-Wilson relation and as such provides an exact lattice realization of chiral symmetry. This in turn implies that the quark action is free of O(a) errors. We present results using the standard Wilson fermion kernel in the overlap formalism on a 12³×24 lattice at a spacing of 0.125 fm. We obtain the nonperturbative momentum-dependent wave function renormalization function Z(p) and the nonperturbative mass function M(p) for a variety of bare masses. We perform a simple extrapolation to the chiral limit for these functions. We clearly observe the dynamically generated infrared mass and confirm the qualitative behavior found for the Landau gauge quark propagator in earlier studies. We attempt to extract the quark condensate from the asymptotic behavior of the mass function in the chiral limit.
Rights: ©2002 The American Physical Society
RMID: 0020020682
DOI: 10.1103/PhysRevD.65.114503
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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