Monte Carlo simulation of a model cuprate

We develop a classical Monte Carlo algorithm based on quasi-classical approximation for pseudospin S = 1 Hamiltonian in real space to construct phase diagram of model cuprate with high Tc. A description takes into account both local and nonlocal correlations, Heisenberg spin-exchange interaction, correlated single-particle, two-particle transport. formulate state selection given parameterization the wave function order ensure uniform distribution states space. The simulation results show qualitative agreement experimental diagrams.