Single flavor staggered fermions

Abstract

Based on recent work by Adams, I construct a lattice fermion operator that fully lifts the staggered flavor degeneracy. The resulting operator is of Wilson type but smaller by a factor of 4, better conditioned and contains 3 instead of 15 doublers. It is further suggested that this operator may be used as a candidate kernel operator to an overlap construction. Prospects for practical applications and potential problems of the new discretizations are briefly discussed.

Comments: 9 pages, 1 table, 1 figure. Referencing slightly modified. Final version, to appear in Phys.Lett.B