Quark matter under strong magnetic fields in the Nambu-Jona-Lasinio model

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.035807· OSTI ID:21199646

Menezes, D P; Pinto, M Benghi; Avancini, S S ^[1]; Martinez, A Perez ^[2]; Providencia, C ^[3]

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1. Departamento de Fisica, CFM, Universidade Federal de Santa Catarina Florianopolis SC, CP. 476, CEP 88.040-900 (Brazil)
2. Instituto de Cibernetica Matematica y Fisica (ICIMAF) Calle E esq 15, No. 309, Vedado, Havana 10400 (Cuba)
3. Centro de Fisica Computacional, Department of Physics, University of Coimbra, P-3004-516 Coimbra (Portugal)

In the present work we use the large-N{sub c} approximation to investigate quark matter described by the SU(2) Nambu-Jona-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 ({>=}10{sup 18} G) affect the equation of state in a non-negligible way.

• OSTI ID: 21199646
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 3; Other Information: DOI: 10.1103/PhysRevC.79.035807; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
EFFECTIVE MASS
EQUATIONS OF STATE
EQUILIBRIUM
MAGNETIC FIELDS
QUARK MATTER
SIMULATION
SU-2 GROUPS