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arXiv · 0809.2715

Phase transition of the nucleon-antinucleon plasma at different ratios

A. Delfino·M. Jansen·V. S. Timóteo
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Abstract

We investigate phase transitions for the Walecka model at very high temperatures. As is well known, depending on the parametrization of this model and for the particular case of a zero chemical potential ($ μ$), a first order phase transition is possible \cite{theis}. We investigate this model for the case in which $ μ\ne 0 $. It turns out that, in this situation, phases with different values of antinucleon-nucleon ratios and net baryon densities may coexist. We present the temperature versus antinucleon-nucleon ratio as well as the temperature versus the net baryon density for the coexistence region. The temperature versus chemical potential phase diagram is also presented.

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A. Delfino, M. Jansen, V. S. Timóteo. 2008-09-16. Phase transition of the nucleon-antinucleon plasma at different ratios. https://doi.org/10.1103/physrevc.78.034909

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