0000000000824506

AUTHOR

Sz. Horvát

showing 2 related works from this author

Flow analysis with 3-dim ultra-relativistic hydro

2009

We review how flow observables of ultra-relativistic heavy-ion collisions are influenced by the initial condition, the description of the fluid dynamical (FD) stage and freeze-out (FO). We discuss the effects of the resolution of the FD treatment, the arising smoothing and numerical viscosity, as well as the consequences of final FO. This final FO stage includes confinement and simultaneous formation of constituent quarks. From the energy and momentum conservation at the FO stage pressure change and flow velocity may occur, which further modifies the observables.

QuarkNuclear physicsPhysicsNuclear and High Energy PhysicsViscosityFlow velocityFlow (mathematics)Initial value problemObservableEnergy–momentum relationMechanicsSmoothingJournal of Physics G: Nuclear and Particle Physics
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Entropy development in ideal relativistic fluid dynamics with the Bag Model equation of state

2010

We consider an idealized situation where the Quark-Gluon Plasma (QGP) is described by a perfect, (3 + 1)-dimensional fluid dynamic model starting from an initial state and expanding until a final state where freeze-out and/or hadronization takes place. We study the entropy production with attention to effects of (i) numerical viscosity, (ii) late stages of flow where the Bag Constant and the partonic pressure are becoming similar, (iii) and the consequences of final freeze-out and constituent quark matter formation.

PhysicsNuclear and High Energy PhysicsPhase transitionNuclear TheoryEntropy productionHigh Energy Physics::PhenomenologyNuclear TheoryFOS: Physical sciencesConstituent quarkHadronizationNuclear Theory (nucl-th)Strange matterQuantum electrodynamicsQuark–gluon plasmaFluid dynamicsHigh Energy Physics::ExperimentNuclear ExperimentEntropy (arrow of time)Mathematical physics
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