Gießen 2024 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 45: Heavy-Ion Collisions and QCD Phases X
HK 45.5: Vortrag
Mittwoch, 13. März 2024, 16:45–17:00, HBR 62: EG 05
QCD Phase Transitions in the Light-Quark Chiral Limit — •Julian Bernhardt1,2 and Christian S. Fischer1,2 — 1Institut für Theoretische Physik, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany — 2Helmholtz Forschungsakademie Hessen für FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung, Campus Gießen, 35392 Gießen, Germany
In this talk, I report on meson-backcoupling effects in the chiral regions of the Columbia plot. To this end, an extension of a sophisticated combination of Lattice Yang–Mills theory and a (truncated) version of Dyson–Schwinger equations in Landau gauge for 2 + 1 quark flavours was employed that does not suffer from the sign problem. This analysis encompasses the chiral limit of the light quarks for different strange-quark masses at small (real and imaginary) chemical potentials. I also present a first exploratory study for chiral strange and non-chiral light quarks.
Keywords: Dyson–Schwinger equations; QCD phase diagram; Columbia plot