VAH simulations in (2+1)D Bjorken flow with transverse expansion show an extended applicability domain over standard viscous hydrodynamics when compared to relaxation-time approximation kinetic theory.
Integrated Dynamical Approach to Relativistic Heavy Ion Collisions
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abstract
We review integrated dynamical approaches to describe heavy ion reaction as a whole at ultrarelativistic energies. Since final observables result from all the history of the reaction, it is important to describe all the stages of the reaction to obtain the properties of the quark gluon plasma from experimental data. As an example of these approaches, we develop an integrated dynamical model, which is composed of a fully (3+1) dimensional ideal hydrodynamic model with the state-of-the-art equation of state based on lattice QCD, and subsequent hadronic cascade in the late stage. Initial conditions are obtained employing Monte Carlo versions of the Kharzeev-Levin-Nardi model (MC-KLN) or the Glauber model (MC-Glauber). Using this integrated model, we first simulate relativistic heavy ion collisions at the RHIC and LHC energies starting from conventional smooth initial conditions. We next utilise each Monte Carlo samples of initial conditions on an event-by-event basis and perform event-by-event dynamical simulations to accumulate a large number of minimum bias events. A special attention is paid to performing the flow analysis as in experiments toward consistent comparison of theoretical results with experimental data.
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Toy models show multi-particle correlators can increase rather than reduce deviation from true flow harmonics in small collision systems.
Predictions for collective flow in O-O collisions at 5.36 TeV are generated with SMASH-vHLLE hybrid, pure SMASH, and Angantyr models to probe the onset of QGP formation in small systems.
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Extended applicability domain of viscous anisotropic hydrodynamics in (2+1)-D Bjorken flow with transverse expansion
VAH simulations in (2+1)D Bjorken flow with transverse expansion show an extended applicability domain over standard viscous hydrodynamics when compared to relaxation-time approximation kinetic theory.
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Effectiveness of nonflow suppression using multi-particle correlators
Toy models show multi-particle correlators can increase rather than reduce deviation from true flow harmonics in small collision systems.
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Collective effects in O-O and Ne-Ne collisions at $\sqrt{s_{\mathrm{NN}}}$=5.36 TeV from a hybrid approach
Predictions for collective flow in O-O collisions at 5.36 TeV are generated with SMASH-vHLLE hybrid, pure SMASH, and Angantyr models to probe the onset of QGP formation in small systems.