A qualitative analysis of the chiral phase transition in QCD at non--zero
baryon density is performed. It is assumed that at zero baryonic density,
ρ=0, the temperature phase transition is of the second order and quark
condesate η=∣∣=∣<0∣dˉd∣0>∣ may be taken as order parameter of phase transition. It is
demonstrated, that the proportionality of baryon masses to quark condensate in
the power 1/3, mB∼∣∣1/3 is valid
in the wide interval of quark condensate values. By supposing, that such
specific dependence of baryon masses on quark condensate takes place up to
phase transition point, it is shown, that at finite baryon density ρ the
phase transition becomes of the first order at the temperature
T=Tph(ρ) for ρ>0. At temperatures
Tcont(ρ)>T>Tph(ρ) there is a mixed phase
consisting of the quark phase (stable) and the hadron phase (unstable). At the
temperature T=Tcont(ρ) the system experiences a continuous
transition to the pure chirally symmetric phase.Comment: 9 pages, 6 figures, Invited talk at 13-th International Seminar
"Quarks-2004",Pushkinskie Gory, May 24-30, 2004, to be published in the
Proceedings. v2. References are correcte