Matching of nonthermal initial conditions and hydrodynamic stage in ultrarelativistic heavy-ion collisions

Abstract

A simple approach is proposed allowing actual calculations of the preequilibrium dynamics in ultrarelativistic heavy-ion collisions to be performed for a far-from-equilibrium initial state. The method is based on the phenomenological macroscopic equations that describe the relaxation dynamics of the energy-momentum tensor and are motivated by Boltzmann kinetics in the relaxation-time approximation. It gives the possibility to match smoothly a nonthermal initial state to the hydrodynamics of the quark gluon plasma. The model contains two parameters, the duration of the prehydrodynamic stage and the initial value of the relaxation-time parameter, and allows one to assess the energy-momentum tensor at a supposed time of initialization of the hydrodynamics.

16 pages, minor corrections, to appear in Phys. Rev. C

References in corpus (11)

• Some Features of the Glasma
• Dissipative Hydrodynamics and Heavy Ion Collisions
• Energy density of the Glasma
• Early Time Dynamics in Heavy Ion Collisions from AdS/CFT Correspondence
• Thermalization of a color glass condensate and review of the "Bottom-Up" scenario
• Matching pre-equilibrium dynamics and viscous hydrodynamics
• From Glasma to Quark Gluon Plasma in heavy ion collisions
• Early Time Dynamics in Heavy Ion Collisions from CGC and from AdS/CFT
• Applicability of viscous hydrodynamics at RHIC
• QCD plasma thermalization, collective flow and extraction of shear viscosity
• Universal Flow in the First fm/c at RHIC

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