| Numéro |
J. Phys. I France
Volume 7, Numéro 12, December 1997
|
|
|---|---|---|
| Page(s) | 1677 - 1692 | |
| DOI | https://doi.org/10.1051/jp1:1997162 | |
J. Phys. I France 7 (1997) 1677-1692
Packing at Random in Curved Space and Frustration: a Numerical Study
Rémi Jullien1, Jean-François Sadoc2 and Rémy Mosseri31 Laboratoire des Verres, Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
2 Laboratoire de Physique des Solides, Université Paris-Sud, Centre d'Orsay, 91405 Orsay Cedex, France
3 Groupe de Physique des Solides, Université Paris VII, Place Jussieu, 75251 Paris Cedex 5, France
(Received 3 July 1997, received in final form 11 August 1997, accepted 18 August 1997)
Abstract
Random packings of discs on the sphere S
2 and spheres on the (hyper-)sphere S
3 have been built on a computer using an extension of the Jodrey-Tory algorithm. Structural quantities such as the volume fraction,
the pair correlation function and some mean characteristics of the Voronoi cells have been calculated for various packings
containing up to
N=8192 units. While the disc packings on S
2 converge continuously, but very slowly, to the regular triangular lattice, the sphere packings on S
3 converge to the disordered frustrated Bernal's packing, of volume fraction
, in the (
) flat space limit. In the S
3 case, the volume fraction exhibits maxima for particular values of
N, for which the corresponding packings have a narrower histogram for the number of edges of Voronoi polyhedra faces.
© Les Editions de Physique 1997