N ov 1 99 4 Properties of an equilibrium hadron gas subjected to the adiabatic longitudinal expansion ∗
نویسنده
چکیده
We consider an ideal gas of massive hadrons in thermal and chemical equilibrium. The gas expands longitudinally in an adiabatic way. This evolution for a baryonless gas reduces to a hydrodynamic expansion. Cooling process is parametrized by the sound velocity. The sound velocity is temperature dependent and is strongly influenced by hadron mass spectrum. ∗Work partially supported by the Polish Committee for Scientific Research under contract KBN-200579101
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