Neutron stars from crust to core within the Quark-meson coupling model

TL;DR

This paper discusses the application of the quark-meson coupling model to neutron star physics, from crust to core, highlighting its ability to incorporate hyperons and match observational data.

Contribution

It presents recent advances of the QMC model applied to neutron stars, including crust composition and comparison with other models, emphasizing its efficiency and consistency.

Findings

QMC model reproduces observed neutron star properties

Crust composition predictions align with other models

Hyperons are naturally included in the model

Abstract

Recent years continue to be an exciting time for the neutron star physics, providing many new observations and insights to these natural laboratories of cold dense matter. To describe them, there are many models on the market but still none that would reproduce all observed and experimental data. The quark-meson coupling model stands out with its natural inclusion of hyperons as dense matter building blocks, and fewer parameters necessary to obtain the nuclear matter equation of state. The latest advances of the QMC model and its application to the neutron star physics will be presented, within which we build the neutron star's outer crust from finite nuclei up to the neutron drip line. The appearance of different elements and their position in the crust of a neutron star is explored and compared to the predictions of various models, giving the same quality of the results for the QMC model as for the models when the nucleon structure is not taken into account.