Analytic perturbation theory versus 1/N expansion in the Gross-Neveu model

被引：3
作者：
Osipov, A. A. [1 ]
Hiller, B.
Blin, A. H.
机构：
[1] Joint Nucl Res Inst, Dzhelepov Lab Nucl Problems, R-141980 Dubna, Russia
[2] Univ Coimbra, Ctr Fis Teor, Dept Fis, P-3004516 Coimbra, Portugal
来源：
PHYSICS LETTERS B | 2007年 / 653卷 / 2-4期
关键词：
SYMMETRY-BREAKING; 2-DIMENSIONAL SYSTEMS; CHIRAL-SYMMETRY; QCD OBSERVABLES; RENORMALIZATION; FERMIONS;
D O I：
10.1016/j.physletb.2007.08.020
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The 1/N expansion can be successfully used to calculate the Green functions of the two-dimensional O(2N) Gross-Neveu model. In parallel, the methods of analytic perturbation theory are also applied. Comparing the results of these two calculations at leading order, we report on the surprising agreement between them. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：346 / 349
页数：4
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