Search Results - subject:"Random lattices"

Critical behavior of the 3D Ising model on a poissonian random lattice

Lima, F.W.S.; Costa, U.M.S.; Costa Filho, R.N. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 7, pp. 1545-1550

The single-cluster Monte Carlo algorithm and the reweighting technique are used to simulate the 3D ferromagnetic Ising model on 3D Voronoi–Delauney lattices. It is assumed that the coupling factor J varies with the distance r between the first neighbors as J(r)∝e−ar, with a≥0. The...

Persistent link: https://www.econbiz.de/10011059843

Spin models on random lattices

Janke, Wolfhard; Johnston, Desmond A; Villanova, Ramon - In: Physica A: Statistical Mechanics and its Applications 281 (2000) 1, pp. 207-220

disordered systems, namely spin models defined on quenched, random lattices exhibiting geometrical disorder in the connectivity … well as on Poissonian random lattices of Voronoi/Delaunay type. Both cases, q⩽4 and >4, are discussed which, in the pure … for the Ising model on Poissonian random lattices are briefly described. We conclude with a comparison of the two types of …

Persistent link: https://www.econbiz.de/10011061095

The ferromagnetic Ising model on a Voronoi–Delaunay lattice

Lima, F.W.S; Moreira, J.E; Andrade, J.S; Costa, U.M.S - In: Physica A: Statistical Mechanics and its Applications 283 (2000) 1, pp. 100-106

We investigate the two-dimensional ferromagnetic Ising model in the Voronoi–Delaunay tesselation. In this study, we assume that the coupling factor J varies with the distance r between the first neighbors as J(r)∝e−αr, with α⩾0. The disordered system is simulated applying the...

Persistent link: https://www.econbiz.de/10011062778