transport and flow near the random close packing
The elasticity, the transport properties and the
rheology of amorphous materials such as grains, colloids or
glasses is complicated by the presence of disorder.
In recent years it has been
realized that for simple systems, such
as frictionless particles, the length scale at which disorder has
strong effects becomes much larger than the particle size, and in fact
near the jamming
transition delimiting the liquid and the solid
phase. This has led to new concepts to describe amorphous materials and
sphere packings that will be reviewed, together with open questions.