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NJL Model at Finite Chemical Potential in a Constant Magnetic Field

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arxiv hep-ph/0404219 v2 pith:TIJFAFBD submitted 2004-04-24 hep-ph

Tomohiro Inagaki , Daiji Kimura , Tsukasa Murata This is my paper · ORCID
classification hep-ph
keywords phasepotentialchemicalboundaryfieldfinitemagneticmodel
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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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  1. Effect of anomalous magnetic moment of quarks on the phase structure and mesonic properties in the NJL model

    nucl-th 2019-07 unverdicted novelty 4.0 of 10

    In the two-flavor NJL model with anomalous magnetic moment of quarks, external magnetic field produces inverse magnetic catalysis and a magnetic-field-dependent drop in the Mott temperature for the Goldstone mode.

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