Gießen 2024 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 68: Heavy-Ion Collisions and QCD Phases XV

HK 68.4: Vortrag

Donnerstag, 14. März 2024, 16:45–17:00, HBR 62: EG 03

Searching for inhomogeneous phases in the quark-meson model beyond mean field — •Lennart Kurth — TU Darmstadt, Germany

Mean field studies of effective models for QCD have revealed the possibility of the preferred condensate being spatially modulated in certain regions of the phase diagram, i.e., inhomogeneous phases. We extend these studies beyond mean field using the functional renormalization group to include pion fluctuations in a simple truncation of the quark-meson model. In this context, we perform a systematic scan of all UV parameters and investigate their effect on the phase diagram, including inhomogeneous phases. The presence of these is determined via stability analysis. As a result, we find that there is a region in parameter space in which an inhomogeneous phase exists, as is the case in mean field.

Keywords: inhomogeneous phases; functional renormalization group; quark-meson model; stability analysis