Non-Perturbative Improvement of the Anisotropic Wilson QCD Action

Abstract

We describe the first steps in the extension of the Symanzik O($a$) improvement program for Wilson-type quark actions to anisotropic lattices, with a temporal lattice spacing smaller than the spatial one. This provides a fully relativistic and computationally efficient framework for the study of heavy quarks. We illustrate our method with accurate results for the quenched charmonium spectrum.

Comments: LATTICE98(improvement), 3 pages, 4 figures