Perturbative calculation of improvement coefficients to O(g**2a) for bilinear quark operators in lattice QCD

We calculate the O(g^2 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.

fermion: lattice field theory
lattice field theory: action
gauge field theory: SU(3)
quark: operator
operator: interference
renormalization
propagator: on-shell
perturbation theory: higher-order
vertex function
amplitude analysis

References(17)

Figures(0)

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