Nonlinear sigma model approach for chiral fluctuations and symmetry breakdown in Nambu-Jona-Lasinio model

Details Nonlinear sigma model approach for chiral fluctuations and symmetry breakdown in Nambu-Jona-Lasinio model Nonlinear sigma model approach for chiral fluctuations and symmetry breakdown in Nambu-Jona-Lasinio model

2000-06-09

arxiv.org/abs/hep-ph/0006087v1

Phys.Rev. D62 (2000) 074020

Physics

High Energy Physics

High Energy Physics - Phenomenology

accepted to Phys. Rev. D. Latest updates of this and related papers are available at http://www.teorfys.uu.se/PEOPLE/egor/

Scientific paper

10.1103/PhysRevD.62.074020

In this paper we discuss symmetry breakdown in NJL model at low N_c. In
particular we propose a modified NJL model that displays a symmetry breakdown
and also at finite temperatures under certain conditions the chiral
fluctuations in this model give rise to a phase analogous to pseudogap phase of
strong-coupling and low carrier density superconductors.

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