Extracting the equation of state from a microscopic non-equilibrium model
- Spieles, Christian
- Dumitru, Adrian
- Bass, Steffen A.
- Bleicher, Marcus
- Brachmann, Jörg
- Brandstetter, Mathias
- Ernst, Christoph
- Gerland, Lars
- Konopka, Jens
- Soff, Sven
- Weber, Henning
- Winckelmann, Luke Andreas
- Maruhn, Joachim
- Stöcker, Horst
- Greiner, Walter
Publication date
January 1996
DOI Publisher
World Scientific Pub Co Pte Lt Language
EnglishAbstract
We study the thermodynamic properties of infinite nuclear matter with the Ultrarelativistic Quantum Molecular Dynamics (URQMD), a semiclassical transport model, running in a box with periodic boundary conditions. It appears that the energy density rises faster than T4 at high temperatures of T approx. 200 - 300 MeV. This indicates an increase in the number of degrees of freedom. Moreover, We have calculated direct photon production in Pb+Pb collisions at 160 GeV/u within this model. The direct photon slope from the microscopic calculation equals that from a hydrodynamical calculation without a phase transition in the equation of state of the photon source
Add to ORKG