Wess-Zumino-Witten Terms of QCD by Bordism Theory
arXiv:2404.06185
Abstract
We investigate the four-dimensional Wess-Zumino-Witten (WZW) terms within the framework of quantum chromodynamics (QCD) using invertible field theory through bordism theory. We present a novel approach aimed at circumventing both perturbative and non-perturbative gauge anomalies on spacetime manifolds endowed with spin structures. We study both ungauged and gauged WZW terms including the problems of the topological consistency of gauged WZW terms.
20 pages