Restoring chiral symmetry to O(a^2) for dynamical Wilson fermions
Roland Hoffmann, Michele Della Morte, Francesco Knechtli, Rainer, Sommer, Ulli Wolff
TL;DR
This paper non-perturbatively determines the improvement and renormalization factors of the isovector axial current in lattice QCD with dynamical Wilson quarks, enhancing the accuracy of chiral symmetry restoration.
Contribution
It provides interpolating formulae for improvement and renormalization factors at various gauge couplings, advancing lattice QCD precision.
Findings
Non-perturbative determination of axial current factors
Formulation of improvement conditions via PCAC in Schroedinger functional
Interpolating formulae for gauge couplings beta > 5.2
Abstract
We present results for the non-perturbative determination of the improvement and renormalization factors of the isovector axial current for lattice QCD with two flavors of dynamical Wilson quarks. The improvement and normalization conditions are formulated in terms of matrix elements of the PCAC relation in the Schroedinger functional setup and results are given in the form of interpolating formulae for bare gauge couplings beta=6/g_0^2>5.2.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · Black Holes and Theoretical Physics