M. Nicodemi et al., THE COMPACTION IN GRANULAR MEDIA AND FRUSTRATED ISING-MODELS, Journal of physics. A, mathematical and general, 30(11), 1997, pp. 379-385
We introduce a lattice model, in which frustration plays a crucial rol
e, to describe relaxation properties of granular media. We show Monte
Carlo results for compaction in the presence of vibrations and gravity
, which compare well with experimental data.