Dimensional deconstruction and Wess-Zumino-Witten terms

  title={Dimensional deconstruction and Wess-Zumino-Witten terms},
  author={Christopher T. Hill and Cosmas K. Zachos},
A new technique is developed for the derivation of the Wess-Zumino-Witten terms of gauged chiral lagrangians. We start in D=5 with a pure (mesonless) Yang-Mills theory, which includes relevant gauge field Chern-Simons terms. The theory is then compactified, and the effective D=4 lagrangian is derived using lattice techniques, or ``deconstruction,'' where pseudoscalar mesons arise from the lattice Wilson links. This yields the WZW term with the correct Witten coefficient by way of a simple… CONTINUE READING