The 2d Gross-Neveu Model at Finite Temperature and Density with Finite Corrections Auteur(s): Kneur J.-L., Pinto Marcus, Ramos R. O. (Article) Publié: Brazilian Journal Of Physics, vol. 37/1 p.258-264 (2007) Texte intégral en Openaccess : Ref HAL: in2p3-00148882_v1 Ref Arxiv: 0704.2843 DOI: 10.1590/S0103-97332007000200016 WoS: 000246477800016 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 7 Citations Résumé: We use the linear $\delta$ expansion, or optimized perturbation theory, to evaluate the effective potential for the two dimensional Gross-Neveu model at finite temperature and density obtaining analytical equations for the critical temperature, chemical potential and fermionic mass which include finite $N$ corrections. Our results seem to improve over the traditional large-N predictions. Commentaires: 7 pages, 8 figures |