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Lattice fermions with complex mass

Stephan Durr·Christian Hoelbling
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Abstract

We present evidence in the Schwinger model that rooted staggered fermions may correctly describe the m<0 sector of a theory with an odd number of flavors. We point out that in QCD-type theories with a complex-valued quark mass every non-chiral action essentially "borrows" knowledge about the theta-transformation properties from the overlap action.

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Stephan Durr, Christian Hoelbling. 2006-07-14. Lattice fermions with complex mass. https://doi.org/10.1103/physrevd.74.014513

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