Evolution of Anisotropy of Parton System from Relativistic Heavy-Ion Collisions

Abstract

Evolution of anisotropy in momentum and coordinate space of the parton system produced in relativistic heavy-ion collisions is discussed within the free-streaming approximation. The momentum distribution evolves from the prolate shape - elongated along the beam - to the oblate one - squeezed along the beam. At the same time the eccentricity in the coordinate space, which occurs at finite values of impact parameter, decreases. It is argued that the parton system reaches local thermodynamic equilibrium before the momentum distribution becomes oblate.

arXiv commentminor corrections, 7 pages, 8 figures, to appear in Phys. Rev. C

References in corpus (7)

• Anisotropic transverse flow and the quark-hadron phase transition
• Elliptic flow from two- and four-particle correlations in Au + Au collisions at sqrt{s_{NN}} = 130 GeV
• Charged Meson Rapidity Distributions in central Au+Au Collisions at sqrt(s_nn) = 200 GeV
• Apparent Thermalization due to Plasma Instabilities in Quark-Gluon Plasma
• The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD
• Thermalization at RHIC
• Chromodynamic Weibel instabilities in relativistic nuclear collisions

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