3 papers
cond-mat.str-el1998
SO(5) Symmetry in t-J and Hubbard Models
W. Hanke, R. Eder, E. Arrigoni +3
Numerical and analytical results are reviewed, which support SO(5) symmetry as a concept unifying superconductivity and antiferromagnetism in the high-temperature superconductors.…
cond-mat.supr-con1997
Response to Greiter's Comment
Eugene Demler, Shou-Cheng Zhang, Stefan Meixner +1
Greiter claimed erroneously that the pi-excitation of the Hubbard model has an energy of the order of U. This mistake originates from a inconsistent treatment of the two particle H…
cond-mat.str-el1997
Finite-Size Studies on the SO(5) Symmetry of the Hubbard Model
Stefan Meixner, Werner Hanke, Eugene Demler +1
We present numerical evidence for the approximate SO(5) symmetry of the Hubbard model on a 10 site cluster. Various dynamic correlation functions involving the operators, the g…