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Quark matter under strong magnetic fields in the NambuJona-Lasinio model
Authors: D. P. Menezes, M. Benghi Pinto, S. S. Avancini, A. Pérez Martínez, e C. Providência
Ref.: Phys. Rev. C 79, 035807-13 (2009)
Abstract: In the present work we use the large-Nc approximation to investigate quark matter described by the SU(2) NambuJona-Lasinio model subject to a strong magnetic field. The Landau levels are filled in such a way that usual kinks appear in the effective mass and other related quantities. beta equilibrium is also considered and the macroscopic properties of a magnetar described by this quark matter is obtained. Our study shows that the magnetar masses and radii are larger if the magnetic field increases but only very large fields (>=1018 G) affect the equation of state in a non-negligible way.
