Dawson, K.Foffi, G.Fuchs, M.Götze, W.Sciortino, F.Sperl, M.Tartaglia, P.Voigtmarin, T.Zaccarelli, E.2010-01-272010-01-272010-01-27200110.1103/PhysRevE.63.0114012-s2.0-0008659938https://infoscience.epfl.ch/handle/20.500.14299/46240The transition from a liquid to a glass in colloidal suspensions of particles interacting through a hard core plus an attractive square-well potential is studied within the rnode-coupling-theory framework. When the width of the attractive potential is much shorter than the hard-core diameter, a reentrant behavior of the liquid-glass line and a glass-glass-transition line are found in the temperature-density plane of the model. For small well-width values, the glass-glass-transition line terminates in a third-order bifurcation point, i.e., in a A3 (cusp) singularity. On increasing the square-well width, the glass-glass line disappears, giving rise to a fourthorder A4 (swallow-tail) singularity at a critical well width. Close to the A3 and A4 singularities the decay of the density correlators shows stretching of huge dynamical windows, in particular logarithmic time dependence. © 2000 The American Physical Society.text::journal::journal article::research article