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DPG

München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 35: Heavy-Ion Collisions and QCD Phases VII

HK 35.1: Gruppenbericht

Mittwoch, 20. März 2019, 14:00–14:30, HS 12

Spectral Functions from the Functional Renormalization Group — •Christopher Jung1, Ralf-Arno Tripolt2, Lorenz von Smekal1, and Jochen Wambach3,41JLU, Giessen — 2GU, Frankfurt — 3ECT*, Trento — 4TU Darmstadt

We present the current status on spectral functions as obtained by applying the non-perturbative functional renormalization group approach (FRG) and a recently proposed analytic continuation method to an effective low-energy theory motivated by the gauged linear sigma model. Here we study the in-medium behavior of the spectral functions of the ρ and a1 meson in different regimes of the phase diagram where we focus on signatures in these data for a critical endpoint (CEP) and the restoration of chiral symmetry. We also present results for in-medium electromagnetic spectral functions and aim at computing temperature and chemical potential dependent dilepton rates within this setup.

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