Solutions of the Ginsparg-Wilson Relation
arXiv:hep-lat/9806019 · doi:10.1103/PhysRevD.59.074501
Abstract
We analyze general solutions of the Ginsparg-Wilson relation for lattice Dirac operators and formulate a necessary condition for such operators to have non-zero index in the topologically nontrivial background gauge fields.
6 pages, latex, no figures, set T to 1 in eqs. (10)--(13)