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Critical exponents of the Gross-Neveu model from the effective average action

L. Rosa·P. Vitale·C. Wetterich
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Abstract

The phase transition of the Gross-Neveu model with N fermions is investigated by means of a non-perturbative evolution equation for the scale dependence of the effective average action. The critical exponents and scaling amplitudes are calculated for various values of N in d=3. It is also explicitely verified that the Neveu-Yukawa model belongs to the same universality class as the Gross-Neveu model.

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L. Rosa, P. Vitale, C. Wetterich. 2002-09-24. Critical exponents of the Gross-Neveu model from the effective average action. https://doi.org/10.1103/physrevlett.86.958

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