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A Possible Origin of the Wilson Lattice Fermion

She-Sheng XUE

hep-latarXiv:hep-lat/9312074

Abstract

Considering relevant and irrelevant high-dimension operators for ordinary and mirror fermions respectively, we show that the Wilson lattice fermion can originate from a spontaneous symmetry breaking phenomenon. Ward identities, due to symmetries at the cutoff, guarantee the cancellation of mirror-fermion contributions and the infrared limit can be achieved. The Wilson parameter turns out to be fixed at r 0.18, where the vacuum energy of the system is minimized.

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