Quark matter in the colour-dielectric model with perturbative gluons

The possibility of describing simultaneously a single nucleon and quark matter in the framework of the colour-dielectric model (CDM) with perturbative gluons is investigated. It is pointed out that including the one-gluon exchange both in the hadronized and in the deconfined phase leads to a quark-hadron phase transition at anomalously small densities. This conclusion is independent of the choice of the model parameters, once these are constrained to yield the correct static properties of the nucleon. The unrealistic deconfinement densities that we find are determined by the large effective mass of quarks in the CDM.