Dynamical properties and the phase diagram of the projected SO(5)-symmetric model of high-Tc superconductors Original Research Article

Numerical studies of a recently constructed projected SO(5) model [1] are presented, which aim at unifying antiferromagnetic and superconducting phases of the cuprates, while at the same time projecting out the high energy Coulomb scale of the Mott gap. We use a new implementation of the Quantum Monte Carlo technique of Stochastic Series Expansion , and with extremely favorable scaling behavior towards large system sizes and low temperatures. Our numerical results show that the projected SO(5) model can give a realistic description of the global phase diagram of the high-Tc superconductors and accounts for many of their physical properties.