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Lattice Fermions without Doublers

Kevin Cahill
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Abstract

By placing fermions only on the even sites of a lattice, one may halve the momentum spectrum and construct a theory without doublers. The interaction is nonlocal. The fermion propagator is not a sparse matrix, but because the unwanted fermionic states are absent from the formalism, it is 256 times smaller than the usual propagator.

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Kevin Cahill. 1995-08-09. Lattice Fermions without Doublers. https://arxiv.org/abs/hep-lat/9508013

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