Influence of the hadronic equation of state on the hadron-quark phase transition in neutron stars

摘要

We study the hadron-quark phase transition in the interior of neutron stars.The relativistic mean field (RMF) theory is adopted to describe the hadronicmatter phase, while the Nambu-Jona-Lasinio (NJL) model is used for the quarkmatter phase. The influence of the hadronic equation of state on the phasetransition and neutron star properties are investigated. We find that a neutronstar possesses a large population of hyperons, but it is not dense enough topossess a pure quark core. Whether the mixed phase of hadronic and quark matterexist in the core of neutron stars depends on the RMF parameters used.