Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Invited Talks III

HK 62.1: Hauptvortrag

Freitag, 14. März 2025, 11:00–11:30, Kurt-Alder HS Chemie

New insights into the QCD phase diagram — •Fabian Rennecke — Institut für Theoretische Physik, Justus-Liebig-Universität Giessen

The phase diagram of quantum chromodynamics (QCD) is of paramount importance for nuclear and particle physics. It tells us how nuclear matter emerged from the quark-gluon plasma of the hot early universe and how the dense interior of neutron stars looks like. Through collisions of heavy ions at relativistic energies and multi-messenger signals from neutron stars and their mergers, we can get a glimpse of the QCD phase diagram and, hence, also a glimpse into the inner workings of strongly interacting matter. The region of the phase diagram relevant for the description of the cores of neutron stars and upcoming heavy-ion collision experiments, such as the Compressed Baryonic Matter experiment at FAIR, is largely unknown. However, a lot of progress has been made in recent years in understanding this region. I will discuss some of the latest developments, with a focus on the ongoing search for the critical endpoint of the chiral phase transition, the possibility for crystalline phases in hot and dense QCD matter, and their experimental signatures.

Keywords: QCD phase diagram; critical endpoint; inhomogeneous phases; the moat regime