Scalar density fluctuation at critical end point in NJL model

Details Scalar density fluctuation at critical end point in NJL model Scalar density fluctuation at critical end point in NJL model

2003-02-19

arxiv.org/abs/hep-ph/0302167v2

Phys.Rev. D67 (2003) 094018

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figures

Scientific paper

10.1103/PhysRevD.67.094018

Soft mode near the critical end point in the phase diagram of two-flavor Nambu--Jona-Lasinio (NJL) model is investigated within the leading 1/N_c approximation with N_c being the number of the colors. It is explicitly shown by studying the spectral function of the scalar channel that the relevant soft mode is the scalar density fluctuation, which is coupled with the quark number density, while the sigma meson mode stays massive.

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