Frustrated Ising Model on D-wave Quantum Annealing Machine

The frustrated Ising model on a two-dimensional L × square lattice with ferromagnetic (FM) nearest-neighbor and antiferromagnetic diagonal-neighbor interactions was studied by simulated annealing quantum D-wave advantage machine 5000+ qubits composed the Pegasus graph structure. A phase transition from FM to stripe order found at critical interaction, which consistent previous Monte Carlo mean field results, through observations of magnetization, energy, magnetic fluctuation, structure factor. results computed are in very good agreement. In addition, probability observing any magnetization given interaction many shots analyzed estimate complexity an energy function. Finally, limitations simulations resulting brokenness chains, we defined as same variable machine, were discussed.