Abstract
The Euclidean massive Gross-Neveu model in two dimensions is just renormalizable and asymptotically free. Thanks to the Pauli principle, bare perturbation theory with an ultra-violet cut-off (and the correct ansatz for the bare mass) is convergent in a disk, whose radius corresponds by asymptotic freedom to a small finite renormalized coupling constant. Therefore, the theory can be fully constructed in a perturbative way. It satisfies the O.S. axioms and is the Borel sum of the renormalized perturbation expansion of the model
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Communicated by K. Osterwalder
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Feldman, J., Magnen, J., Rivasseau, V. et al. A renormalizable field theory: The massive Gross-Neveu model in two dimensions. Commun.Math. Phys. 103, 67–103 (1986). https://doi.org/10.1007/BF01464282
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DOI: https://doi.org/10.1007/BF01464282