Programme

P.26 -- Posters, VCTP-51

Date: Tuesday, 4 August 2026

Time: 09:30 - 10:30

Microscopic description of Quarkyonic matter in neutron stars using the miscroscopic interaction

Ngo Hai Tan

Phenikaa University

Recent astrophysical observations of massive neutron stars and GW170817 require an equation of state (EOS) where the sound speed exceeds the conformal limit. While the Quarkyonic matter model naturally explains this behavior through a nucleon-quark crossover, it typically relies on simplified phenomenological potentials. In this work, we improve the dynamical Quarkyonic framework by integrating the microscopic, density-dependent CDM3Y6 interaction to describe the nucleon Fermi shell. By analyzing beta-equilibrated npeμ matter, we demonstrate that this realistic nuclear physics foundation naturally stiffens the EOS and provides radius predictions consistent with the latest observational constraints. Our findings underscore that incorporating realistic nucleon interactions is essential for accurately modeling the internal structure of hybrid stars.

Presenter: Ngo Hai Tan