Witten's SU(2) anomaly on the lattice
High Energy Physics - Lattice
2016-09-01 v3 High Energy Physics - Theory
Abstract
Witten's anomaly for SU(2) with a single I=1/2 Weyl fermion in four dimension is shown to be reproduced by the lattice overlap. The mechanism is based on Berry's phase, and on the analyticity of the matrix by which the overlap is defined.
Cite
@article{arxiv.hep-lat/9805027,
title = {Witten's SU(2) anomaly on the lattice},
author = {Herbert Neuberger},
journal= {arXiv preprint arXiv:hep-lat/9805027},
year = {2016}
}
Comments
additional minor changes, 11 pages, 6 figures, plain TeX with epsf