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

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

2007-07-10

arxiv.org/abs/0707.1427v1

Phys.Lett.B653:346-349,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 3 figures, 4 pages

Scientific paper

10.1016/j.physletb.2007.08.020

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.

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