Light hadron spectroscopy in quenched lattice QCD with chiral Fixed-Point fermions

Abstract

The classically perfect Fixed-Point fermion action for lattice QCD, a highly improved discretization of the continuum theory that preserves chiral symmetry, is constructed in this thesis and a parallel work by T. Jorg. In the framework of the BGR collaboration, we perform studies in quenched light hadron spectroscopy with this new action in order to examine its chiral and scaling properties and investigate in detail the chiral limit of pseudoscalar mesons. Topological finite-volume artifacts are identified and removed, and the coefficient of the quenched chiral logarithm is measured. The results show that the Fixed-Point action allows to simulate at quark masses corresponding to PS/V<0.3, has small scaling violations in hadron masses and reproduces the continuum energy-momentum dispersion relation very well.

arXiv commentPhD thesis, 148 pages, 81 eps figures. A few typos corrected

Cited by in corpus (8)

• Testing the fixed-point QCD action and the construction of chiral currents
• Quenched spectroscopy with fixed-point and chirally improved fermions
• Light hadron and diquark spectroscopy in quenched QCD with overlap quarks on a large lattice
• Quenched QCD with fixed-point and chirally improved fermion
• Recent results from systematic parameterizations of Ginsparg-Wilson fermions
• Chiral measurements in quenched lattice QCD with Fixed Point fermions
• Light hadron spectra and wave functions in quenched QCD with overlap quarks on a large lattice
• Light hadron spectroscopy in quenched QCD with overlap fermions