Equation of state, spectra and composition of hot and dense infinite hadronic matter in a microscopic transport model

Equilibrium properties of infinite relativistic hadron matter are investigated using the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model. The simulations are performed in a box with periodic boundary condition
Equilibrium properties of infinite relativistic hadron matter are investigated using the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model. The simulations are performed in a box with periodic boundary conditions. Equilibration times depend critically on energy and baryon densities. Energy spectra of various hadronic species are shown to be isotropic and consistent with a single temperature in equilibrium. The variation of energy density versus temperature shows a Hagedorn-like behavior with a limiting temperature of 130 +/- 10 MeV. Comparison of abundances of different particle species to ideal hadron gas model predictions show good agreement only if detailed balance is implemented for all channels. At low energy densities, high mass resonances are not relevant; however, their importance raises with increasing energy density. The relevance of these different conceptual frameworks for any interpretation of experimental data is questioned.
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Metadaten
Author:Mohamed Belkacem, Mathias Brandstetter, Steffen A. Bass, Marcus Bleicher, Larissa V. Bravina, Mark I. Gorenstein, Jens Konopka, Ludwig Neise, Christian Spieles, Sven Soff, Henning Weber, Horst Stöcker, Walter Greiner
URN:urn:nbn:de:hebis:30-6893
Document Type:Preprint
Language:English
Date of Publication (online):2005/04/13
Year of first Publication:1998
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/04/13
Source:http://de.arxiv.org/abs/nucl-th/9804058 , Phys.Rev. C58 (1998) 1727-1733
HeBIS PPN:128747226
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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