2012/10/11 by Ph. Mota, T. Kodama, J. Takahashi +1
Physics and Astronomy · #Classical mechanics #Computer science #Flow (mathematics) #Granularity #High-Energy Particle Collisions Research #Mechanics #Observable #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scale (ratio) #Space (punctuation) #Statistical physics #Thermal #Thermodynamics #hep-ph #nucl-th
paper · pdf · doi:10.1140/epja/i2012-12165-7
12 pages, 4 figures, Quark Matter 2012
arxiv created 2012/10/11 · openalex publication_date 2012/11/01 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.