QMC and the nature of dense matter: written in the stars?
J. D. Carroll (CSSM, Australia)
TL;DR
This paper reviews recent advances in modeling hybrid stars with the improved Quark-Meson Coupling (QMC) model, focusing on the effects of non-nucleonic components and in-medium quark interactions on dense matter properties.
Contribution
It introduces an enhanced QMC model incorporating in-medium hyperfine interactions to better understand hybrid star composition and behavior.
Findings
Improved QMC model predicts dense matter properties more accurately.
Inclusion of non-nucleonic degrees of freedom affects star stability.
Enhanced model aligns with recent astrophysical observations.
Abstract
We discuss the recent progress in calculating the properties of 'hybrid stars' (stellar objects similar to neutron stars, classified by the incorporation of non-nucleonic degrees of freedom, including but not limited to hyperons and/or a quark-matter core) using the octet-baryon Quark-Meson Coupling (QMC) model. The version of QMC used is a recent improvement which includes the in-medium modification of the quark-quark hyperfine interaction.
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