Erlangen 2026 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 24: Heavy-Ion Collisions and QCD Phases IV

HK 24.3: Talk

Wednesday, March 18, 2026, 14:30–14:45, PHIL A 401

Neutron Star Properties with Skyrme Potentials from Relativistic Heavy-Ion Physics — •Eleonora Foerster, Sarah Pitz, Selina Kunkel, Ishfaq Rather, and Jürgen Schaffner-Bielich — Goethe Universität, Frankfurt am Main, Germany

The study of ultra-dense matter created in relativistic heavy-ion collisions provides important constraints on the nuclear equation of state (EoS), which is a key input for modeling neutron stars. In this contribution, we explore the mutual interplay between EoS constraints extracted from heavy-ion flow measurements and observational mass-radius constraints of neutron stars. Using a Skyrme-based EoS constrained by heavy-ion data, mass-radius relations for symmetric nuclear matter and pure neutron matter are calculated and compared to current neutron-star observations. The focus is on investigating how specific properties of the nuclear interaction, in particular the nuclear incompressibility K, influence neutron-star observables such as the maximum mass and radius. Variations of K lead to noticeable changes in the predicted maximum mass, demonstrating the connection between neutron star observables and contraints on the EoS by heavy-ion physics.

Keywords: Neutron Stars; Heavy-Ion collision; Skyrme Potential; maximum mass