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``Pressure Equilibration'' in Ultrarelativistic Heavy Ion Collisions

J. Brachmann·A. Dumitru·C. Spieles·J. Maruhn·H. Stöcker·W. Greiner
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Abstract

We study the time scale for pressure equilibration in heavy ion collisions at AGS energies within the three-fluid hydrodynamical model and a microscopic cascade model (UrQMD). We find that kinetic equilibrium is reached in both models after a time of 5 fm/c (center-of-mass time). Thus, observables which are sensitive to the early stage of the reaction differ considerably from the expectations within the instant thermalization scenario (one-fluid hydrodynamical model).

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J. Brachmann, A. Dumitru, C. Spieles, J. Maruhn, H. Stöcker, W. Greiner. 1997-01-22. ``Pressure Equilibration'' in Ultrarelativistic Heavy Ion Collisions. https://arxiv.org/abs/nucl-th/9701045

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