Witten's SU(2) anomaly on the lattice

Details Witten's SU(2) anomaly on the lattice Witten's SU(2) anomaly on the lattice

1998-05-26

arxiv.org/abs/hep-lat/9805027v3

Phys.Lett. B437 (1998) 117-122

Physics

High Energy Physics

High Energy Physics - Lattice

additional minor changes, 11 pages, 6 figures, plain TeX with epsf

Scientific paper

10.1016/S0370-2693(98)00873-9

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 $H$ by which the
overlap is defined.

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