To the problem of 1/Nc approximation in the Nambu-Jona-Lasinio model

Details To the problem of 1/Nc approximation in the Nambu-Jona-Lasinio model To the problem of 1/Nc approximation in the Nambu-Jona-Lasinio model

1994-12-26

arxiv.org/abs/hep-th/9412214v1

Phys.Atom.Nucl. 59 (1996) 140-143; Yad.Fiz. 59 (1996) 149-152

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, latex, 3 figures are not included

Scientific paper

In this article, the gap equation for the constituent quark mass in the U(2)*U(2) Nambu-Jona-Lasinio model for the 1/Nc approximation is investigated. It is shown that taking into account scalar isovector mesons plays an important role for the correct description of quark masses in this approximation. The role of the Ward identity in calculations of 1/Nc corrections to the meson vertex functions is shortly discussed.

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