Towards the continuum limit of the overlap quark propagator in Landau gauge

✍ Scribed by J.B. Zhang; F.D.R. Bonnet; P.O. Bowman; D.B. Leinweber; A.G. Williams

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 246 KB
• Volume: 119
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)80474-7

✦ Synopsis

The properties of the momentum space quark propagator in Landau gauge are examined for the overlap quark action in quenched lattice &CD. Numerical calculations were done on t,wo lattices with different lattice spacing a and similar physical volumes to explore the quark propagator in the continuum limit. We have calculated the nonperturbative wavefunction renormalization function Z(p) and the nonperturbative mass function M(p) for a variety of bare quark masses and perform a simple linear extrapolation to the chiral limit. We find the behaviour of Z(p) and M(p) in the chiral limit are in good agreement between the two lattices.