title: Optimal lattice domain-wall fermions.
abstract: I show that the conventional formulations of lattice domain-wall fermion with any finite N(s) (in the fifth dimension) do not preserve the chiral symmetry optimally and propose a new action which preserves the chiral symmetry optimally for any finite N(s).
authors.affiliation: Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA. twchiu@phys.ntu.edu.tw
authors.forename: Ting-Wai
authors.initials: TW
authors.lastname: Chiu