SU(2) chiral Yang-Mills model on a lattice. Witten anomaly eaten by the lattice
arXiv:hep-lat/9710009 · doi:10.1016/S0370-2693(98)00028-8
Abstract
Using a regularisation of the chiral SU(2) Yang-Mills model by an infinite number of Pauli-Villars fields the doubler free gauge invariant lattice model is constructed. Its continuum limit provides the recently proposed mechanism for cancelation of Witten anomaly.
Changes suggested by the Referee are made, new references are added, 10pp. To appear in Phys.Lett.B