The medium effect of magnetic moments of baryons on the neutron star under strong magnetic fields

초록

We investigate the effect of density dependent magnetic moment of baryons in strong magnetic fields for neutron star with hyperons and kaons. Under strong magnetic fields, all charged particles experience Landau quantization, so that chemical potentials, equation of state and mass-radius relations depend on magnetic fields strength. In particular, since magnetic fields are combined with magnetic moments of baryons, we calculate the neutron star with hyperons and kaon condensation, and investigate the effect of density dependent magnetic moment of baryon octet obtained by the quark-meson coupling model. The effect is maximally 0.1M⊙ for hyperonic matter, but in kaonic matter, its effect can be ignored.