title: Multiple reentrant glass transitions of soft spheres at high densities: monotonicity of the curves of constant relaxation time in jamming phase diagrams depending on temperature over pressure and pressure.
abstract: By using molecular-dynamics simulations, we determine the jamming phase diagrams at high densities for a bidisperse mixture of soft spheres that interact according to repulsive power-law pair potentials. We observe that the relaxation time varies nonmonotonically as a function of density at constant temperature. Therefore, the jamming phase diagrams contain multiple reentrant glass transitions if temperature and density are used as control parameters. However, if we consider a new formulation of the jamming phase diagrams where temperature over pressure and pressure are employed as control parameters, no nonmonotonic behavior is observed.
authors.affiliation: Institut für Theoretische Physik 2: Weiche Materie, Heinrich-Heine-Universität Düsseldorf, D-40204 Düsseldorf, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Schmiedeberg
mesh_terms: D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D008863:Microspheres; D008956:Models, Chemical; D008958:Models, Molecular; D044367:Phase Transition; D011312:Pressure; D013696:Temperature
chemical_list: D003102:Colloids