Pugnaloni Luis A, Valluzzi Marcos G, Valluzzi Lucas G
Instituto de Física de Líquidos y Sistemas Biológicos, UNLP-CONICET, cc. 565, 1900 La Plata, Argentina.
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 May;73(5 Pt 1):051302. doi: 10.1103/PhysRevE.73.051302. Epub 2006 May 4.
We simulate the tapping of a bed of hard disks in a rectangular box by using a pseudodynamic algorithm. In these simulations, arches are unambiguously defined and we can analyze their properties as a function of the tapping amplitude. We find that an order-disorder transition occurs within a narrow range of tapping amplitudes as has been seen by others. Arches are always present in the system although they exhibit regular shapes in the ordered regime. Interestingly, an increase in the number of arches does not always correspond to a reduction in the packing fraction. This is in contrast with what is found in three-dimensional systems.
