SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Nuclear Astrophysics II

HK 19.6: Vortrag

Dienstag, 21. März 2023, 18:30–18:45, SCH/A419

The phase structure of neutral three flavor quark matter — •Marco Hofmann, Hosein Gholami, and Michael Buballa — Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstr. 2, 64289 Darmstadt

This talk explores the phase structure and equation of state of dense neutral quark matter at zero and finite temperature. As the equation of state and the speed of sound of neutron stars become more and more constrained by observations from gravitational waves and mass-radius measurements, the phenomenology of the quark matter phase structure is pivotal to understand the composition of stars with a quark matter core. We calculate the phase diagram from a three flavor Nambu Jona-Lasinio (NJL)-type model in the mean field approximation. Color superconductivity is included through the attractive scalar diquark channel. A repulsive vector interaction increases the stiffness of the matter. Furthermore, we address the systematic removal of cutoff artefacts within an renormalization group consistent approach.