Exact Realization ofSO(5)Symmetry in Extended Hubbard Models

1997/07/28 by C. L. Henley, Christopher L. Henley
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetism in coordination complexes #Physics of Superconductivity and Magnetism #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.80.3590

4 pages, LaTeX; no figures; submitted, Phys. Rev. Lett

arxiv created 1997/07/28 · openalex publication_date 1998/04/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Zhang recently conjectured an approximate SO(5) symmetry relating antiferromagnetic and superconducting states in high- T_c cuprates. Here, an exact SO(5) symmetry is implemented in a generalized Hubbard model (with long-range interactions) on a lattice. The possible relation to a more realistic extended Hubbard Hamiltonian is discussed.

Citations

• Finite-Size Studies on the SO(5) Symmetry of the Hubbard Model
• Microscopic Electron Models with Exact SO(5) Symmetry