Non-perturbative determination of heavy quark action coefficients

Abstract

We propose to determine the coefficients in the Fermilab heavy quark action by matching the finite-volume, off-shell, gauge-fixed propagator and vertex functions with those determined in the exact, relativistic theory. The matching relativistic amplitudes may be determined either from short-distance perturbation theory or from finite-volume step-scaling recursion. Tree-level matching and non-perturbative off-shell amplitudes are presented.

Comments: Talk presented at Lattice2004(heavy), Fermilab, June 21-26, 2004. 3 pages