Perturbative coefficients for improved actions by Monte Carlo at large $β$

Details Perturbative coefficients for improved actions by Monte Carlo at large $β$ Perturbative coefficients for improved actions by Monte Carlo at large $β$

1997-10-02

arxiv.org/abs/hep-lat/9710015v1

Nucl.Phys.Proc.Suppl. 63 (1998) 865-867

Physics

High Energy Physics

High Energy Physics - Lattice

3 Pages, LaTeX (espcrc2.sty, uses \psfig), 3 Postscript figures, Talk presented at LATTICE'97, Edinburgh

Scientific paper

10.1016/S0920-5632(97)00923-7

Perturbative estimates of operator coefficients for improved lattice actions are becoming increasingly important for precision simulations of many hadronic observables. Following previous work by Dimm, Lepage, and Mackenzie, we consider the feasibility of computing operator coefficients from numerical simulations deep in the perturbative region of lattice theories. Here we introduce a background field technique that may allow for the computation of the coefficients of clover-field operators in a variety of theories. This method is tested by calculations of the renormalized quark mass in lattice NRQCD, and of the $O(\alpha_s)$ clover coefficient for Sheikholeslami-Wohlert fermions. First results for the coefficient of the magnetic moment operator in NRQCD are also presented.

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