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Phase transition in hot pion matter |
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| Authors: | A Kostyuk M Gorenstein H Stcker W Greiner |
| Institution: | a Institut für Theoretische Physik, Universität Frankfurt, Frankfurt, Germany b Bogolyubov Institute for Theoretical Physics, Kyiv, Ukraine |
| Abstract: | The equation of state for the pion gas is analyzed within the third virial approximation. The second virial coefficient is found from the ππ-scattering data, while the third one is considered as a free parameter. The proposed model leads to a first-order phase transition from the pion gas to a more dense phase at the temperature Tpt<136 MeV. Due to relatively low temperature this phase transition cannot be related to the deconfinement. This suggests that a new phase of hadron matter — ‘hot pion liquid’ — may exist. |
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