Chiral Phase Structure at Finite Temperature and Density in Einstein Universe

Details Chiral Phase Structure at Finite Temperature and Density in Einstein Universe Chiral Phase Structure at Finite Temperature and Density in Einstein Universe

2006-02-21

arxiv.org/abs/hep-ph/0602186v3

Astropart.Phys.28:472-480,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 8 figures, published version

Scientific paper

10.1016/j.astropartphys.2007.09.

The gravitational effect on the chiral phase structure at finite temperature and density is investigated in the framework of Nambu--Jona-Lasinio model in $D$-dimensional ultrastatic Einstein universe. In mean field approximation, the thermodynamic potential and the gap equation determining the curvature, temperature and density dependence of the chiral condensate are analytically derived. In the sense of chiral symmetry restoration and the order of the phase transition, the scalar curvature of the space-time plays similar role as the temperature.

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