Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 39: Invited Talks II

HK 39.3: Hauptvortrag

Donnerstag, 13. März 2025, 12:00–12:30, Kurt-Alder HS Chemie

New Constraints on the Nuclear Equation of State — •Melissa Mendes — Technische Universität Darmstadt, Department of Physics — ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH — Max-Planck-Institut für Kernphysik, Heidelberg

Investigating the behavior of the nuclear equation of state (EOS) is an exciting interdisciplinary research area. In this endeavor, the exploration of neutron stars has been fruitful to probe the EOS against their predictions for neutron star properties, such as mass, radius and tidal deformability and test the high-density EOS behavior. Over the past years, substantial progress has been achieved on EOS calculations at nuclear densities based on chiral effective field theory interactions with reliable many-body techniques. In this talk, I will present new constraints on the neutron star EOS and mass-radius range based on new chiral EFT results for matter in beta equilibrium up to next-to-next-to-next-to-leading order as well as recent NICER observations and LIGO/VIRGO gravitational wave events.

*Funded by ERC Grant Agreement No. 101020842

Keywords: Neutron stars; Equation of state; Chiral EFT; NICER