TY  - INPR
A1  - Bravina, Larissa
A1  - Gorenstein, Mark I.
A1  - Belkacem, Mohamed
A1  - Bass, Steffen A.
A1  - Bleicher, Marcus
A1  - Brandstetter, Mathias
A1  - Hofmann, M.
A1  - Soff, Sven
A1  - Spieles, Christian
A1  - Weber, Henning
A1  - Stöcker, Horst
A1  - Greiner, Walter
T1  - Local thermodynamical equilibrium and the equation of state of hot, dense matter created in Au+Au collisions at AGS
N2  - Local kinetic and chemical equilibration is studied for Au+Au collisions at 10.7 AGeV in the microscopic Ultrarelativistic Quantum Molecular Dynamics model (UrQMD). The UrQMD model exhibits dramatic deviations from equilibrium during the high density phase of the collision. Thermal and chemical equilibration of the hadronic matter seems to be established in the later stages during a quasiisentropic expansion, observed in the central reaction cell with volume 125 fm3. For t > 10 fm/c the hadron energy spectra in the cell are nicely reproduced by Boltzmann distributions with a common rapidly dropping temperature. Hadron yields change drastically and at the late expansion stage follow closely those of an ideal gas statistical model. The equation of state seems to be simple at late times: P = 0.12 Epsilon. The time evolution of other thermodynamical variables in the cell is also presented.
KW  - Statistical model
KW  - equation of state
KW  - thermalization
KW  - Monte-Carlo model for relativistic heavy ion collisions
Y1  - 1998
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4805
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-6886
UR  - http://de.arxiv.org/abs/nucl-th/9804008
N1  - Preprint, später in Phys.Lett. B434 (1998) 379-387
ER  -