Non-perturbative O(a) improvement of lattice QCD

Abstract

The coefficients multiplying the counterterms required for O($a$) improvement of the action and the isovector axial current in lattice QCD are computed non-perturbatively, in the quenched approximation and for bare gauge couplings $g_0$ in the range $0\le g_0\le 1$. A finite-size method based on the Schrödinger functional is employed, which enables us to perform all calculations at zero or nearly zero quark mass. As a by-product the critical hopping parameter ${\kappa }_c$ is obtained at all couplings considered.

typo in eq. (7.3) corrected; 26 pages, postscript file

References in corpus (5)

• Chiral symmetry and O(a) improvement in lattice QCD
• O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory
• Implementation of Symanzik's Improvement Program for Simulations of Dynamical Wilson Fermions in Lattice QCD
• The effect of tree-level and mean-field improvement on the light-hadron spectrum in quenched QCD
• The Light Hadron Mass Spectrum with Non-Perturbatively O(a) Improved Wilson Fermions

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• Schr"odinger functional at negative flavour number
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• Clover fermions in the adjoint representation and simulations of supersymmetric Yang-Mills theory
• Improved Quenched QCD on Large Lattices - First Results
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• Construction of lattice Möbius domain wall fermions in the Schrödinger functional scheme
• Charmonium Spectrum from Quenched Lattice QCD with Tadpole Improvement Action
• Light Quark Simulations With FLIC Fermions
• Electromagnetic vertex function of the pion at T > 0
• Improving QCD with fermions: the 2 dimensional case of QCD with Sea Quarks
• Remnants of quark model in lattice QCD simulation in the Coulomb gauge
• Non-perturbative Renormalization Constants using Ward Identities
• Study of Hadron Masses with Faddeev-Popov Eigenmode Projection in the Coulomb Gauge
• SU(2) gauge theory with $N_f=24$ quarks at non-zero mass