Journal
PHYSICAL REVIEW C
Volume 80, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.80.065805
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Funding
- Capes/FCT [232/09]
- CNPq (Brazil)
- FCT
- FEDER (Portugal) [CERN/FP/83505/2008]
- Compstar, an ESF Research Networking Programme
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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(19) G. When the su(3) NJL model is applied to stellar matter, the maximum mass configurations are always above 1.45M(circle dot) and may be as high as 1.86M(circle dot) for a central magnetic field of 5x10(18) G. These numbers are within the masses of observed neutron stars.
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