Quark Deconfinement Phase Transition in Neutron Stars

TL;DR

This paper investigates the hadron-quark phase transition in neutron stars, focusing on the effects of delta-meson fields and comparing mixed-phase and first-order transition models.

Contribution

It introduces the impact of delta-meson mean-field on the phase transition parameters and compares mixed-phase and Maxwell construction approaches.

Findings

Delta-meson field alters phase transition parameters.

Mixed-phase and Maxwell constructions yield different star structures.

Results enhance understanding of neutron star interior composition.

Abstract

The hadron-quark phase transition in the interior of compact stars is investigated, when the transition proceeds through a mixed phase. The hadronic phase is described in the framework of relativistic mean-field theory, when also the scalar-isovector delta-meson mean-field is taken into account. The changes of the parameters of phase transition caused by the presence of delta-meson field are explored. The results of calculation of structure of the mixed phase (Glendenning construction) are compared with the results of usual first-order phase transition (Maxwell construction).