GLASS-TRANSITION FOR DIPOLAR HARD-SPHERES - A MODE-COUPLING APPROACH

We apply the self-consistent mode-coupling equations, which were recen tly derived for molecular liquids, to a system of dipolar hard spheres . Making use of the direct correlation function in a mean spherical ap proximation and with a restriction of the rotational quantum number l to zero and one, we find three different phases in the eta-T phase spa ce. eta and T denote the packing fraction and the temperature respecti vely. There is one phase where both the transitional degrees of freedo m (TDOFs) and the orientational degrees of freedom (ODOFs) are ergodic (liquid), another phase with frozen TDOFs and ergodic ODOFs, and a th ird phase where TDOFs and ODOFs are frozen (glass). The dynamical tran sitions between these phases are discussed.