NJL Model at Finite Chemical Potential in a Constant Magnetic Field

Details NJL Model at Finite Chemical Potential in a Constant Magnetic Field NJL Model at Finite Chemical Potential in a Constant Magnetic Field

2004-04-24

arxiv.org/abs/hep-ph/0404219v2

Prog.Theor.Phys.Suppl.153:321-324,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 figures, Poster talk presented at the Workshop on Finite Density QCD at Nara, Japan, 10-12 July 2003; replaced two

Scientific paper

10.1143/PTPS.153.321

We investigate the influence of an external magnetic field on chiral symmetry breaking in the Nambu-Jona-Lasinio (NJL) model at finite temperature and chemical potential. According to the Fock-Schwinger proper-time method, we calculate the effective potential in the leading order of the $1/N_c$ expansion. The phase boundary dividing the symmetric phase and the broken phase is illustrated numerically. A complex behavior of the phase boundary is found for large chemical potential.

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