Recent results from systematic parameterizations of Ginsparg-Wilson fermions

Abstract

The Fixed Point Dirac Operator and Chirally Improved Fermions both use large numbers of gauge paths and the full Dirac structure to approximate a solution of the Ginsparg-Wilson equation. After a brief review of the two approaches we present recent results for quenched QCD with pion masses down to 210 MeV. We discuss the limits and advantages of approximate parameterizations and outline future perspectives.

Lattice2002(plenary). References and Fig. 5 updated. Final version submitted to the proceedings

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• The topological susceptibility of SU(3) gauge theory near T_c
• Chiral Properties of Pseudoscalar Mesons on a Quenched $20^4$ Lattice with Overlap Fermions
• Quenched chiral logarithms in lattice QCD with exact chiral symmetry
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Cited by in corpus (11)

• Dynamical overlap fermions, results with hybrid Monte-Carlo algorithm
• Quenched spectroscopy with fixed-point and chirally improved fermions
• Excited hadrons on the lattice: Baryons
• Excited hadrons on the lattice: Mesons
• Spatially improved operators for excited hadrons on the lattice
• A lattice calculation of vector meson couplings to the vector and tensor currents using chirally improved fermions
• Excited nucleons with chirally improved fermions
• Masses of excited baryons from chirally improved quenched lattice QCD
• Absence of evidence for pentaquarks on the lattice
• Excited hadrons from improved interpolating fields
• Search for the Theta^+(1540) in lattice QCD