2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38789A lattice derivative is defined as a discrete Fourier transform of momentum on a finite lattice. Species doublers are removed with anti-periodic boundary conditions. U(1) chiral transformation is modified to reproduce chiral anomaly. Chiral gauge theories can be constructed on the lattice using a single Weyl fermion as a building block.Poster presented at Fundamental Problems and Applications of Quantum Field Theory, Yukawa Institute, Dec 25, 2003High Energy Physics - Latticetext