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arXiv · hep-lat/9409018

Perfect Lattice Actions for the Gross-Neveu Model at large N

W. Bietenholz·E. Focht·U. -J. Wiese
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Abstract

Fixed point actions for free and interacting staggered lattice fermions are constructed by iterating renormalization group transformations. At large N the fixed point action for the Gross-Neveu model is a perfect action in the sense of Hasenfratz and Niedermayer, i.e. cut-off effects are completely eliminated. In particular, the fermionic 1-particle energy spectrum of the lattice theory is identical with the one of the continuum even for arbitrarily small correlation lengths. The cut-off effects of the chiral condensate are eliminated using a perfect operator. (The paper is stored as a ps-file containing both the text and 5 figures.)

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W. Bietenholz, E. Focht, U. -J. Wiese. 1994-09-23. Perfect Lattice Actions for the Gross-Neveu Model at large N. https://doi.org/10.1016/0550-3213(94)00516-h

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