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Phase Transition in Hot Pion Matter

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arxiv hep-ph/0010076 v2 pith:U55XXZGV submitted 2000-10-09 hep-ph

A. Kostyuk , M. Gorenstein , H. Stoecker , W. Greiner This is my paper · ORCID
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keywords phasepiontransitionmattertemperaturethirdvirialanalyzed
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The equation of state for the pion gas is analyzed within the third virial approximation. The second virial coefficient is found from the pion-pion- 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 T_pt < 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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