Transport
Meeting
Location: Frankfurt Institute for Advanced
Studies (FIAS), Lecture Room 100
Time: Wednesday, November 19,
11:00am (s. t.)
Contact:
hees@fias.uni-frankfurt.de
Leonid Satarov
Equation of state and
sound velocity of hadronic gas with hard-core interaction
Thermodynamic
properties of hot and dense hadronic systems with a hard-sphere
interaction are calculated in the Boltzmann approximation. Two
parametrizations of pressure as a function of density are considered:
the first one, used in the excluded volume model and the second one,
suggested earlier by Carnahan and Starling. The results are given for
one-component systems containing only nucleons or pions, as well as for
chemically equilibrated mixtures of pions, nucleons and $\Delta$
resonances. It is shown that the Carnahan-Starling approach can be
used in a much broader range of hadronic densities as compared to the
excluded volume model. In this case superluminal sound velocities appear
only at very high densities, in the region where the deconfinement
effects should be already important.
Transport
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