Liquid-gas phase transition in nuclear matter including strangeness

Details Liquid-gas phase transition in nuclear matter including strangeness Liquid-gas phase transition in nuclear matter including strangeness

2004-07-20

arxiv.org/abs/nucl-th/0407056v2

Phys. Rev. C70 (2004) 055204

Physics

Nuclear Physics

Nuclear Theory

15 pages, 7 figures

Scientific paper

10.1103/PhysRevC.70.055204

We apply the chiral SU(3) quark mean field model to study the properties of strange hadronic matter at finite temperature. The liquid-gas phase transition is studied as a function of the strangeness fraction. The pressure of the system cannot remain constant during the phase transition, since there are two independent conserved charges (baryon and strangeness number). In a range of temperatures around 15 MeV (precise values depending on the model used) the equation of state exhibits multiple bifurcates. The difference in the strangeness fraction $f_s$ between the liquid and gas phases is small when they coexist. The critical temperature of strange matter turns out to be a non-trivial function of the strangeness fraction.

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