Chiral symmetry on a lattice with hopping interactions

Abstract

The species doubling problem of the lattice fermion is resolved by introducing hopping interactions that mix left- and right-handed fermions around the momentum boundary. Approximate chiral symmetry is realized on the lattice. The deviation of the fermion propagator from the continuum one is small.

Comments: 3 pages, 2 figures, talk presented at Lattice2003 (chiral fermions)