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.
Hydrodynamic description of ultrarelativistic heavy-ion collisions
7 Pith papers cite this work. Polarity classification is still indexing.
7
Pith papers citing it
abstract
Relativistic hydrodynamics has been extensively applied to high energy heavy-ion collisions. We review hydrodynamic calculations for Au+Au collisions at RHIC energies and provide a comprehensive comparison between the model and experimental data. The model provides a very good description of all measured momentum distributions in central and semiperipheral Au+Au collisions, including the momentum anisotropies (elliptic flow) and systematic dependencies on the hadron rest masses up to transverse momenta of about 1.5--2 GeV/c. This provides impressive evidence that the bulk of the fireball matter shows efficient thermalization and behaves hydrodynamically. At higher p_t the hydrodynamic model begins to gradually break down, following an interesting pattern which we discuss. The elliptic flow anisotropy is shown to develop early in the collision and to provide important information about the early expansion stage, pointing to the formation of a highly equilibrated quark-gluon plasma at energy densities well above the deconfinement threshold. Two-particle momentum correlations provide information about the spatial structure of the fireball (size, deformation, flow) at the end of the collision. Hydrodynamic calculations of the two-particle correlation functions do not describe the data very well. Possible origins of the discrepancies are discussed but not fully resolved, and further measurements to help clarify this situation are suggested.
citation-role summary
background 2
citation-polarity summary
verdicts
UNVERDICTED 7roles
background 2polarities
background 2representative citing papers
Formal solutions of Boltzmann moment equations demonstrate that relativistic hydrodynamics works far from equilibrium because non-perturbative modes and modified transport coefficients enable interpolation between free streaming and hydrodynamic regimes.
Thermal dileptons at forward rapidity show 3-4% suppression from finite baryon density but remain correlated with early hydrodynamic temperatures in LHC heavy-ion collisions.
The p_T dependence of the Ω/φ ratio in pp, p-Pb and Pb-Pb collisions is dominated by the discrete curvature of the strange-quark transverse-momentum spectrum extracted from φ data via quark-number scaling.
Neutron skin in lead nuclei enhances elliptic flow in Pb+Pb collisions at LHC, with stronger effects for photons and peripheral collisions.
An expanding fire-cylinder model fitted to pion pT spectra describes spectra of other light hadrons and qualitatively matches their elliptic flow in peripheral Au+Au collisions at BES energies.
A pedagogical review of lattice QCD results on the thermodynamics of hot, dense, and magnetized QCD matter with an outlook on open questions.
citing papers explorer
-
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.
-
Validity of relativistic hydrodynamics beyond local equilibrium
Formal solutions of Boltzmann moment equations demonstrate that relativistic hydrodynamics works far from equilibrium because non-perturbative modes and modified transport coefficients enable interpolation between free streaming and hydrodynamic regimes.
-
Thermal dileptons to probe the baryon-rich QCD matter in the forward region of LHC energy heavy-ion collisions
Thermal dileptons at forward rapidity show 3-4% suppression from finite baryon density but remain correlated with early hydrodynamic temperatures in LHC heavy-ion collisions.
-
Transverse momentum dependence of $\Omega/\phi$ ratio in high energy collisions
The p_T dependence of the Ω/φ ratio in pp, p-Pb and Pb-Pb collisions is dominated by the discrete curvature of the strange-quark transverse-momentum spectrum extracted from φ data via quark-number scaling.
-
The neutron skin effect in Pb+Pb collisions at 2.76A TeV at the LHC
Neutron skin in lead nuclei enhances elliptic flow in Pb+Pb collisions at LHC, with stronger effects for photons and peripheral collisions.
-
Spectra and elliptic flow of light hadrons in an expanding fire-cylinder model for the RHIC Beam Energy Scan
An expanding fire-cylinder model fitted to pion pT spectra describes spectra of other light hadrons and qualitatively matches their elliptic flow in peripheral Au+Au collisions at BES energies.
-
Thermodynamics of magnetized matter in hot and dense QCD
A pedagogical review of lattice QCD results on the thermodynamics of hot, dense, and magnetized QCD matter with an outlook on open questions.