Coarse graining scale and effectiveness of hydrodynamic modeling

Abstract

Some basic questions about the hydrodynamical approach to relativistic heavy ion collisions are discussed aiming to clarify how far we can go with such an approach to extract useful information on the properties and dynamics of the QCD matter created. We emphasize the importance of the coarse-graining scale required for the hydrodynamic modeling which determines the space-time resolution and the associated limitations of collective flow observables. We show that certain kinds of observables can indicate the degree of inhomogeneity of the initial condition under less stringent condition than the local thermal equilibrium subjected to the coarse-graining scale compatible to the scenario.

12 pages, 4 figures, Quark Matter 2012

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Cited by in corpus (7)

• Initial State Fluctuations and Final State Correlations in Relativistic Heavy-Ion Collisions
• Hydrodynamic Approaches in Relativistic Heavy Ion Reactions
• Sensitivity of flow harmonics to sub-nucleon scale fluctuations in heavy ion collisions
• Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model
• A Study of the Di-Hadron Angular Correlation Function in Event by Event Ideal Hydrodynamics
• Unraveling the Landau's consistence criterion and the meaning of interpenetration in the "Two-Fluid" Model
• Coarse Graining in Hydrodynamics and Effects of Fluctuations