SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 28: Heavy-Ion Collisions and QCD Phases VI

HK 28.1: Gruppenbericht

Mittwoch, 22. März 2023, 14:00–14:30, SCH/A315

Transport Model Evaluation Project for Intermediate-Energy Heavy-Ion Collisions — •Hermann Wolter — University of Munich (LMU), unich, Germany

Transport models describing the evolution of a heavy-ion collision are indispensable to extract information on the equation-of-state of nuclear matter and medium properties of hadrons from such experiments in the intermediate energy range from several 100 MeV to a few GeV per nucleon. Of particular interest today is the high-density behavior of the nuclear symmetry energy, which is of great relevance for the understanding of astrophysical objects and processes. However, the highly complex and non-linear transport equations are commonly solved by simulations, which involve choices of strategies, which are not necessarily determined by the underlying equations. Thus it has occurred that studies using different transport models have deduced differing conclusions from the same data. In order to understand these differences and to reduce the systematical uncertainties of transport analyses of heavy-ion collisions, we have, within the TMEP collaboration, undertaken an extensive project of comparing many transport codes in different set-ups under controlled conditions (a review is given in H. Wolter et al., Progr. Part. Nucl. Phys. 125 (2022) 103962), also providing benchmark calculations. Here we will discuss the present status and future projects of this undertaking.