Let us examine now the phase diagram of a hadronic resonance gas in equilibrium
with the strange quark matter equation of state derived above.
Fig. 20 shows the
plane for a
fixed strangeness fraction of
and
MeV.
Even for low temperatures
and baryon densities
this simple model predicts
the coexistence of a hadron- and a QGP-phase.
Figure
: Phase diagram of a hadron gas and infinite quark matter (B
MeV)
for fixed
.
This illustrates that the thermodynamical properties of a
strange system can indeed be strange! Calculations of QGP signals should therefore take
this finite net-strangeness degree of freedom into account.