Critical exponents of the Gross-Neveu model from the effective average action |
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Authors: | Rosa L Vitale P Wetterich C |
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Affiliation: | Institut für Theoretische Physik, Universit?t Heidelberg, Philosophenweg 16, D-69120, Heidelberg, Germany. |
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Abstract: | The phase transition of the Gross-Neveu model with N fermions is investigated by means of a nonperturbative 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 explicitly verified that the Neveu-Yukawa model belongs to the same universality class as the Gross-Neveu model. |
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