MONTE-CARLO STUDY OF 8-STATE POTTS-MODEL ON 2D RANDOM LATTICES

We study the effect of quenched coordination-number disorder of random lattices on the nature of the phase transition in the two-dimensional eight-state Potts model, which is of first order on regular lattices. We consider Poissonian random lattices of toroidal topology construct ed according to the Voronoi/Delaunay prescription. Monte Carlo simulat ions yield strong evidence that the phase transition remains first ord er.