  We obtain possibly valuable information about the phase diagram of rather
dense composite particles at high fermion as well as boson number density but
low temperature, which is not accessible to relativistic heavy ion collision
experiments. Our calculations could qualitatively measure the number of
thermodynamic degrees of freedom at the time at which the matter (produced in
heavy ion collisions which might be a deconfined quark-gluon plasma) comes into
approximate local thermal equilibrium and begins to behave like a hydrodynamic
fluid. Possible observational signatures associated with the theoretically
proposed states of matter inside compact stars are discussed as well.
