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.
arXiv comment4 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
References in corpus (21)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
- Strange Quark Matter and Compact Stars
- Phases of Dense Quarks at Large N_c
- The NANOGrav 11-year Data Set: High-precision timing of 45 Millisecond Pulsars
- The role of nucleon structure in finite nuclei
- Constraining neutron star matter with QCD
- A quark-meson model for nuclear and neutron matter
- Nucleon and hadron structure changes in the nuclear medium and impact on observables
- An updated mass-radius analysis of the 2017-2018 NICER data set of PSR J0030+0451
- Hadron-Quark Crossover and Massive Hybrid Stars with Strangeness
- The Radius of the High-mass Pulsar PSR J0740+6620 with 3.6 yr of NICER Data
- Equation of state for neutron stars in SU(3) flavor symmetry
- Quark-Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond
- Hard-core deconfinement and soft-surface delocalization from nuclear to quark matter
- Effects of Fock term, tensor coupling and baryon structure variation on a neutron star
- Stiffening of matter in quark-hadron continuity
- Quark-Meson Coupling Model, Nuclear Matter Constraints and Neutron Star Properties
- Momentum Shell in Quarkyonic Matter from Explicit Duality: A Dual Model for Cold, Dense QCD
- Might Normal Nuclear Matter be Quarkyonic?
- Effect of isoscalar and isovector scalar fields on baryon semileptonic decays in nuclear matter