Phase diagram of the Z(4) model
Vera Lúcia Vieira Baltar, Gilson Carneiro, Maria Elena Pol +1 more
Systems with Z(4) global symmetry defined on a square lattice are studied, in the whole parameter space, both by Monte Carlo simulations and by the Migdal-Kadanoff renormalisation group scheme. A phase diagram is obtained with quantitative predictions as to the location of the boundaries between the different phases. Four distinct phases are observed.
Journal of Physics A Mathematical and General•Jul 11, 1984•9 citations