Chiral Lattice Gauge Theories from Warped Domain Walls and   Ginsparg-Wilson Fermions
  We propose a construction of a 2-dimensional lattice chiral gauge theory. The construction may be viewed as a particular limit of an infinite warped 3-dimensional theory. We also present a "single-site'' construction using Ginsparg-Wilson fermions which may avoid, in both 2 and 4 dimensions, the problems of waveguide-Yukawa models. 
Tanmoy Bhattacharya, Matthew R. Martin (LANL), and Erich Poppitz   (University of Toronto)