Quark spin polarization in high density quark matter
1 Physics Division, Faculty of Science, Kochi University, Kochi 780-8520, Japan
2 Departamento de Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal
3 Department of Pure and Applied Physics, Faculty of Engineering Science, Kansai University, Suita 564-8680, Japan
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Published online: 20 March 2014
It is shown that there exists a possibility of spontaneous spin polarization in high density symmetric quark matter under the tensor-type four-point interaction between quarks in the Nambu-Jona-Lasinio model. Further, the spontaneous magnetization is simply estimated by taking into account only the lowest Landau level.
© Owned by the authors, published by EDP Sciences, 2014