"Pressure equilibration" in ultrarelativistic heavy ion collisions

  • 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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Author:Jörg BrachmannGND, Adrian Bogdan DumitruORCiDGND, Christian Spieles, Joachim MaruhnORCiDGND, Horst StöckerORCiDGND, Walter GreinerGND
ArXiv Id:http://arxiv.org/abs/nucl-th/9701045
Document Type:Preprint
Year of Completion:1997
Year of first Publication:1997
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/01/19
Tag:Kollisionen schwerer Ionen; Quark-Gluon-Plasma; Zustandsgleichungen
equation of state; heavy ion collisions; quark-gluon plasma
Page Number:3
First Page:1
Last Page:3
Erschienen in: Scientific Report, 1996, S. 86
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht