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

Authors
Rosa, L Vitale, P Wetterich, C
Citation
L. Rosa et al., Critical exponents of the Gross-Neveu model from the effective average action, PHYS REV L, 86(6), 2001, pp. 958-961
Citations number
13
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
6
Year of publication
2001
Pages
958 - 961
Database
ISI
SICI code
0031-9007(20010205)86:6<958:CEOTGM>2.0.ZU;2-H
Abstract
The phase transition of the Gross-Neveu model with N fermions is investigat ed by means of a nonperturbative evolution equation for the scale dependenc e of the effective average action. The critical exponents and scaling ampli tudes are calculated for various values of N in d = 3. It is also explicitl y verified that the Neveu-Yukawa model belongs to the same universality cla ss as the Gross-Neveu model.