Perturbative calculation of improvement coefficients to O(g2a) for bilinear quark operators in lattice QCD
Abstract
We calculate the O(g2 a) mixing coefficients of bilinear quark operators in lattice QCD using a standard perturbative evaluation of on-shell Green's functions. Our results for the plaquette gluon action are in agreement with those previously obtained with the Schr\"odinger functional method. The coefficients are also calculated for a class of improved gluon actions having six-link terms.
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