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NJL Model at Finite Chemical Potential in a Constant Magnetic Field

Tomohiro Inagaki·Daiji Kimura·Tsukasa Murata
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Abstract

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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Tomohiro Inagaki, Daiji Kimura, Tsukasa Murata. 2004-05-26. NJL Model at Finite Chemical Potential in a Constant Magnetic Field. https://doi.org/10.1143/ptps.153.321

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