The vacuum contribution to quark matter under a uniform magnetic field within the SU(3) version of the Nambu–Jona-Lasinio model is studied. The standard regularization procedure is examined and a new prescription is proposed. For this purpose analytic regularization and a subtraction scheme are used to deal with divergencies depending on the magnetic intensity. This scheme is combined with the standard three momentum cutoff recipe, and reduces to it for vanishing magnetic intensity. Furthermore, the effects of a direct coupling between the anomalous magnetic moments of the quarks and the magnetic field is considered. Single particle properties as well as bulk thermodynamical quantities are studied for a configuration of matter found in neutron stars. A wide range of baryonic densities and magnetic intensities are examined at zero temperature.
Información general
Fecha de publicación:noviembre 2020
Idioma del documento:Inglés
Revista:Physical Review D; vol. 102, no. 9
Institución de origen:Facultad de Ciencias Exactas; Instituto de Física La Plata