Abstract
The concept of dynamic equivalence among mono-disperse soft-sphere fluids is employed inthe framework of the self-consistent generalized Langevin equation (SCGLE) theory ofcolloid dynamics to calculate the ideal glass transition phase diagram of modelsoft-sphere colloidal dispersions in the softness–concentration state space. The slowdynamics predicted by this theory near the glass transition is compared withavailable experimental data for the decay of the intermediate scattering function ofcolloidal dispersions of soft-microgel particles. Increasing deviations from this simplescheme occur for increasingly softer potentials, and this is studied here using theRogers–Young static structure factor of the soft-sphere systems as the input of the SCGLEtheory, without assuming a priori the validity of the equivalence principle above.
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