The 2d Gross-Neveu model at finite temperature and density with finite N corrections

被引：8

作者：

Kneur, Jean-Loic ^{[1
]}

Pinto, Marcus Benghi

Ramos, Rudnei O.

机构：

[1] Univ Montpellier 2, Lab Phys Math & Theor, CNRS, UMR 5825, Montpellier, France

[2] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil

[3] Univ Estado Rio de Janeiro, Dept Fis Teor, BR-20550013 Rio De Janeiro, Brazil

来源：

BRAZILIAN JOURNAL OF PHYSICS | 2007年 / 37卷 / 1B期

关键词：

non perturbative methods; Gross-Neveu model; finite temperature; finite density;

D O I：

10.1590/S0103-97332007000200016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use the linear 5 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.

引用

页码：258 / 264

页数：7

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