Quark matter under strong magnetic fields in the su(3) Nambu-Jona-Lasinio model
- Depto de Fisica, CFM, Universidade Federal de Santa Catarina, C.P. 476, CEP 88.040-900, Florianopolis, SC (Brazil)
- Centro de Fisica Computacional, Department of Physics, University of Coimbra, P-3004-516, Coimbra (Portugal)
In the present work we use the mean-field approximation to investigate quark matter described by the su(3) Nambu-Jona-Lasinio (NJL) model subject to a strong magnetic field. We consider two cases: pure quark matter and quark matter in {beta} equilibrium possibly present in magnetars. The results are compared with the ones obtained with the su(2) version of the model. The energy per baryon of magnetized quark matter becomes more bound than nuclear matter made of iron nuclei, for B around 2x10{sup 19} G. When the su(3) NJL model is applied to stellar matter, the maximum mass configurations are always above 1.45M{sub {center_dot}} and may be as high as 1.86M{sub {center_dot}} for a central magnetic field of 5x10{sup 18} G. These numbers are within the masses of observed neutron stars.
- OSTI ID:
- 21296637
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevC.80.065805; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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