2001/06/30 by A. Dorneich, W. Hanke, E. Arrigoni +2
Physics and Astronomy · #cond-mat.supr-con #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.88.057003
published as Phys. Rev. Lett. 88, 057003 (2002) · Final version. Accepted for publication in Phys. Rev. Lett
arxiv created 2002/01/08 · arxiv updated 2009/11/30
We present numerical studies of a quantum ``projected'' SO(5) model which aims at a unifying description of antiferromagnetism and superconductivity in the high-Tc cuprates, while properly taking into account the Mott insulating gap. Our numerical results, obtained by the Quantum Monte Carlo technique of Stochastic Series Expansion, show that this model can give a realistic description of the global phase diagram of the high-Tc superconductors and accounts for many of their physical properties. Moreover, we address the question of dynamic restoring of the SO(5) symmetry at the critical point.