Progress using generalized lattice Dirac operators to parametrize the Fixed-Point QCD action

Abstract

We report on an ongoing project to parametrize the Fixed-Point Dirac operator for massless quarks, using a very general construction which has arbitrarily many fermion offsets and gauge paths, the complete Clifford algebra and satisfies all required symmetries. Optimizing a specific construction with hypercubic fermion offsets, we present some preliminary results.

Comments: Lattice 2000 (Improvement), 9 pages, based on a talk by K.H. and a poster by T.J. References added