Darmstadt 2016 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 3: Heavy Ion Collision and QCD Phases II
HK 3.3: Vortrag
Montag, 14. März 2016, 14:45–15:00, S1/01 A4
Hydrodynamic bubbles in a transport approach — Dmytro Oliinychenko1 and •Hannah Petersen1,2,3 — 1Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, 60438 Frankfurt am Main, Germany — 2Institute for Theoretical Physics, Goethe University, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany — 3GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany
Hybrid approaches are very successfully applied for the description of the dynamics of heavy ion collisions. In the high density regime one takes advantage of relativistic hydrodynamics, while at lower density non-equilibrium transport models are applied. Handling the transitions between fluid dynamics and the transport description includes uncertainties, both when generating the initial condition by turning particles into fluid and in the final stages, when particles are sampled from the fluid.
We suggest a way to avoid these uncertainties by generating hydrodynamical behaviour directly in the transport approach. In the regions of high density we perform a forced thermalization, which effctively simulates the result of N-particle collisions. The effect of these hydrodynamic bubbles on bulk observables such as elliptic flow is investigated by comparing the results to pure transport and traditional hybrid approach.