Mainz 2022 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 13: Heavy-Ion Collisions and QCD Phases IV
HK 13.1: Vortrag
Montag, 28. März 2022, 16:00–16:15, HK-H2
Coarse Grained Transport Dynamics with FRG spectral function — •Maximilian Wiest1, Tetyana Galatyuk1,2,4, Ralf-Arno Tripolt3, Lorenz von Smekal3,4, Jochen Wambach1, and Joachim Stroth2,4,5 — 1TU Darmstadt, Germany — 2GSI, Darmstadt, Germany — 3Justus Liebig University Giessen, Germany — 4Helmholtz Research Academy Hesse for FAIR (HFHF), Germany — 5Goethe University Frankfurt, Germany
The bulk of the detected particles stemming from heavy ion collisions are hadrons. Being strongly interacting, they are heavily influenced by final state interactions. As produced dileptons are not subject to the strong interaction, they do not suffer from this disadvantage and can leave the fireball undisturbed, probing the hot and dense matter before it freezes out. We use the microscopic transport model UrQMD to simulate gold-gold collisions at 1.23 AGeV at different centrality classes. Employing a Coarse Graining approach, we are able to combine the simulated microscopic dynamics with in-medium spectral functions obtained from FRG methods. This allows us to study the thermal dilepton production in heavy-ion collisions at SIS 18 energies. Our aim is to investigate the consistency of our approach. For this purpose, we will compare different methods of extracting the bulk observables as well as determining thermalization and explore the effect of variations in the underlying parameters like grid sizes. Supported by VH-NG-823, DFG CRC-TR 211 and GSI.