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Magnetic Oscillations in the Nambu - Jona-Lasinio model

D. Ebert·K. G. Klimenko
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Abstract

The phase structure of a simple Nambu-Jona-Lasinio model has been investigated at non-zero values of $μ$ and H, where H is an external magnetic field and $μ$ is the chemical potential. On this basis magnetic oscillations effects were considered. It was shown that there are standard (periodic) van Alphen-de Haas magnetic oscillations of some thermodynamical quantities, including magnetization, pressure and particle density in the NJL system. Besides, we have found non-standard, i.e. non-periodic, magnetic oscillations, since the frequency of oscillations is a H-dependent quantity. Finally, there arises an oscillating behaviour not only for thermodynamical quantities, but also for a dynamical quantity like the quark mass. The possibility for magnetic oscillations of some physical quantities inside neutron stars is discussed.

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D. Ebert, K. G. Klimenko. 1999-11-23. Magnetic Oscillations in the Nambu - Jona-Lasinio model. https://doi.org/10.1063/1.1303031

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