Revised Phase Diagram of the Gross-Neveu Model

Details Revised Phase Diagram of the Gross-Neveu Model Revised Phase Diagram of the Gross-Neveu Model

2003-02-13

arxiv.org/abs/hep-th/0302092v2

Phys.Rev. D67 (2003) 125015

Physics

High Energy Physics

High Energy Physics - Theory

Revtex, 12 pages, 15 figures; v2: Axis labelling in Fig. 9 corrected

Scientific paper

10.1103/PhysRevD.67.125015

We confirm earlier hints that the conventional phase diagram of the discrete chiral Gross-Neveu model in the large N limit is deficient at non-zero chemical potential. We present the corrected phase diagram constructed in mean field theory. It has three different phases, including a kink-antikink crystal phase. All transitions are second order. The driving mechanism for the new structure of baryonic matter in the Gross-Neveu model is an Overhauser type instability with gap formation at the Fermi surface.

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