Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2002-06-21
Physical Review E 66, 041402 (2002)
Physics
Condensed Matter
Soft Condensed Matter
15 pages,15 figures; submitted to Phys. Rev. E
Scientific paper
10.1103/PhysRevE.66.041402
Previous theoretical, along with early simulation and experimental, studies have indicated that particles with a short-ranged attraction exhibit a range of new dynamical arrest phenomena. These include very pronounced reentrance in the dynamical arrest curve, a logarithmic singularity in the density correlation functions, and the existence of `attractive' and `repulsive' glasses. Here we carry out extensive molecular dynamics calculations on dense systems interacting via a square-well potential. This is one of the simplest systems with the required properties, and may be regarded as canonical for interpreting the phase diagram, and now also the dynamical arrest. We confirm the theoretical predictions for re-entrance, logarithmic singularity, and give the first direct evidence of the coexistence, independent of theory, of the two coexisting glasses. We now regard the previous predictions of these phenomena as having been established.
Buldyrev Sergey V.
Dawson Kenneth A.
Foffi Giuseppe
Sciortino Francesco
Tartaglia Piero
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