Phase Structure of Nambu-Jona-Lasinio Model at Finite Isospin Density

Details Phase Structure of Nambu-Jona-Lasinio Model at Finite Isospin Density Phase Structure of Nambu-Jona-Lasinio Model at Finite Isospin Density

2005-01-05

arxiv.org/abs/hep-ph/0501024v2

Phys.Lett.B615:93-101,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, submitted to Phys.Lett.B

Scientific paper

10.1016/j.physletb.2005.03.066

In the frame of flavor SU(2) Nambu--Jona-Lasinio model with $U_A(1)$ breaking
term we found that, the structure of two chiral phase transition lines does not
exist at low isospin density in real world, and the critical isospin chemical
potential for pion superfluidity is exactly the pion mass in the vacuum.

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