Phase transition of the nucleon-antinucleon plasma at different ratios

Details Phase transition of the nucleon-antinucleon plasma at different ratios Phase transition of the nucleon-antinucleon plasma at different ratios

2008-09-16

arxiv.org/abs/0809.2715v1

Phys.Rev.C78:034909,2008

Physics

Nuclear Physics

Nuclear Theory

5 pages, 8 figures

Scientific paper

10.1103/PhysRevC.78.034909

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 ($ \mu $), a first order phase transition is possible \cite{theis}. We investigate this model for the case in which $ \mu \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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