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The fourth root of the Kogut-Susskind determinant via infinite component fields

Herbert Neuberger
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Abstract

An example of interpolation by means of local field theories between the case of normal Kogut-Susskind fermions and the case of keeping just the fourth root of the Kogut-Susskind determinant is given. For the fourth root trick to be a valid approximation certain limits need to be smooth. The question about the validity of the fourth root trick is not resolved, only cast into a local field theoretical framework.

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Herbert Neuberger. 2004-09-23. The fourth root of the Kogut-Susskind determinant via infinite component fields. https://doi.org/10.1103/physrevd.70.097504

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