paper

A dual description of quarks and baryons: Quarkyonic matter within a relativistic quark model

arXiv:2603.19839 · doi:10.1016/j.jspc.2026.100411

Abstract

We investigate quarkyonic matter within a relativistic quark model by combining the dual quarkyonic picture with the quark-meson coupling (QMC) model. Using relativistic gaussian quark wavefunctions for the nucleon, we construct the quarkyonic QMC (QQMC) model and study the properties of symmetric nuclear matter and pure neutron matter. We find that the quark saturation density depends sensitively on the nucleon size parameter and that nuclear interactions quantitatively modify the high-density behavior of the equation of state (EoS) and the sound velocity. In particular, the QQMC model yields an earlier onset of quark saturation than the noninteracting gaussian quarkyonic (GQ) model, indicating that nuclear interactions enhance the stiffening of the EoS in the quarkyonic regime.

4 papes, 4 figures, 2 table, proceedings of The 2025 International Conference on the Structure of Baryons (Baryons 2025), Jeju, Korea, 10-14 Nov, 2025; v2: minor changes

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