Contact process on a Voronoi triangulation.
We study the continuous absorbing-state phase transition in the contact process on the Voronoi-Delaunay lattice. The Voronoi construction is a natural way to introduce quenched coordination disorder in lattice models. We simulate the disordered system using the quasistationary simulation method and determine its critical exponents and moment ratios. Our results suggest that the critical behavior of the disordered system is unchanged with respect to that on a regular lattice, i.e., that of directed percolation.
de Oliveira
Marcelo M
MM
Departamento de Física, Universidade Federal de Viçosa, 36571-000, Viçosa, MG, Brazil. mancebo@fisica.ufmg.br
Alves
S G
SG
Ferreira
S C
SC
Dickman
Ronald
R