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arXiv · 1405.3575

Thermodynamically Anomalous Regions As A Mixed Phase Signal

K. A. Bugaev·A. I. Ivanytskyi·D. R. Oliinychenko·V. V. Sagun·I. N. Mishustin·D. H. Rischke·L. M. Satarov·G. M. Zinovjev
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Abstract

Using the most advanced model of the hadron resonance gas we reveal, at chemical freeze-out, remarkable irregularities such as an abrupt change of the effective number of degrees of freedom and plateaus in the collision-energy dependence of the entropy per baryon, total pion number per baryon, and thermal pion number per baryon at laboratory energies 6.9-11.6 AGeV. On the basis of the generalized shock adiabat model we show that these plateaus give evidence for the thermodynamic anomalous properties of the mixed phase at its boundary to the quark-gluon plasma (QGP). A new signal for QGP formation is suggested and justified.

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K. A. Bugaev, A. I. Ivanytskyi, D. R. Oliinychenko, V. V. Sagun, I. N. Mishustin, D. H. Rischke, L. M. Satarov, G. M. Zinovjev. 2014-05-14. Thermodynamically Anomalous Regions As A Mixed Phase Signal. https://doi.org/10.1134/s1547477115020065

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