Properties of predictive formulation of the Nambu-Jona-Lasinio model and ghost problem

Details Properties of predictive formulation of the Nambu-Jona-Lasinio model and ghost problem Properties of predictive formulation of the Nambu-Jona-Lasinio model and ghost problem

2008-10-19

arxiv.org/abs/0810.3364v2

J.Phys.A42:195403,2009

Physics

High Energy Physics

High Energy Physics - Theory

Journal version (8 pages, no figures)

Scientific paper

10.1088/1751-8113/42/19/195403

Recently proposed by Battistel et al. "predictive formulation of the NJL model" is discussed and its connection with the differential regularization is noted. The principal problem of this formulation is a non-physical singularity (Landau pole) in meson propagators. A modification of the formulation, which is free of the Landau pole and conserves main features of the approach, is proposed.

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