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Journal Articles Physical Review C Year : 2018

Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach

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Abstract

We evaluate the effects of preequilibrium dynamics on observables in ultrarelativistic heavy-ion collisions. We simulate the initial nonequilibrium phase within A MultiPhase Transport (AMPT) model, while the subsequent near-equilibrium evolution is modeled using (2+1)-dimensional relativistic viscous hydrodynamics. We match the two stages of evolution carefully by calculating the full energy-momentum tensor from AMPT and using it as input for the hydrodynamic evolution. With a shear viscosity to entropy density ratio of $0.12$, our model describes quantitatively a large set of experimental data on Pb+Pb collisions at the Large Hadron Collider(LHC) over a wide range of centrality: differential anisotropic flow $v_n(p_T) ~(n=2-6)$, event-plane correlations, correlation between $v_2$ and $v_3$, and cumulant ratio $v_2\{4\}/v_2\{2\}$.
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Dates and versions

cea-01613944 , version 1 (19-10-2022)

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Chandrodoy Chattopadhyay, Rajeev S. Bhalerao, Jean-Yves Ollitrault, Subrata Pal. Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach. Physical Review C, 2018, 97, pp.034915. ⟨cea-01613944⟩
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