Consistency in Regularizations of the Gauged NJL Model at One Loop Level

Details Consistency in Regularizations of the Gauged NJL Model at One Loop Level Consistency in Regularizations of the Gauged NJL Model at One Loop Level

1998-11-16

arxiv.org/abs/hep-th/9811154v1

Phys.Rev. D59 (1999) 055010

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, no figures, LaTeX, to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.59.055010

In this work we revisit questions recently raised in the literature associated to relevant but divergent amplitudes in the gauged NJL model. The questions raised involve ambiguities and symmetry violations which concern the model's predictive power at one loop level. Our study shows by means of an alternative prescription to handle divergent amplitudes, that it is possible to obtain unambiguous and symmetry preserving amplitudes. The procedure adopted makes use solely of {\it general} properties of an eventual regulator, thus avoiding an explicit form. We find, after a thorough analysis of the problem that there are well established conditions to be fulfiled by any consistent regularization prescription in order to avoid the problems of concern at one loop level.

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