Chiral model for dense, hot and strange hadronic matter

Details Chiral model for dense, hot and strange hadronic matter Chiral model for dense, hot and strange hadronic matter

1999-08-26

arxiv.org/abs/nucl-th/9908072v1

Nucl.Phys. A663 (2000) 737-740

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures, Contribution to the Proceedings of the 15th Particles and Nuclei International Conference (PANIC 99), Upps

Scientific paper

10.1016/S0375-9474(99)00707-1

An extended chiral SU(3) model is applied to the description of dense, hot and strange hadronic matter. The degrees of freedom are the baryon octet and decuplet and the spin-0 and spin-1 meson multiplets. The parameters of the model are fitted to the hadron masses in vacumm, infinite nuclear matter properties and soft pion theorems. At high densities the appearance of density isomers cannot be ruled out and extrapolation to finite temperature exhibits a first order phase transition at $T \approx 150 MeV$. The predicted dropping baryon masses lead to drastically changed particle ratios compared to ideal gas calculations.

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