EPJ Web Conf.
Volume 271, 2022HYP2022 - 14th International Conference on Hypernuclear and Strange Particle Physics
|Number of page(s)||6|
|Section||Strangeness in Astrophysics and in Extreme Forms of Matter|
|Published online||09 November 2022|
Exploring the role of hyperons in high density matter in the Quark-Meson-Coupling model
1 Department of Physics and Astronomy, University of Tennessee, Knoxville, USA
2 Department pf Physics (Astrophysics), University of Oxford, Oxford, UK
* e-mail: firstname.lastname@example.org
Published online: 9 November 2022
Microscopic composition and properties of matter at super-saturation densities have been a subject of intense investigations for decades. Experimental and observational data and fundamental laws of physics indicate that heavy strange baryons and mesons are essential components of the matter. The Quark-Meson-Coupling-Model (QMC) is well suited for such a study. The model is based on interaction between quarks in individual baryons instead between the baryons as entities without internal structure. This approach significantly increases transparency and reduces the number of variable parameters of the model, thus offering deeper insight into the physics of high density hadronic matter. In this contribution, we review the effect of hyperons on neutron star (NS) properties, the speed of sound and the symmetry energy, both at zero and finite temperature. The QMC results are contrasted with the outcome of the traditional relativistic mean field DD2Y model. The (lack of) the so-called ‘hyperon puzzle’ in both models is discussed.
© The Authors, published by EDP Sciences, 2022
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