3 papers
cond-mat.supr-con2001
Phase diagram and dynamics of the projected SO(5)-symmetric model of high- superconductivity
A. Dorneich, W. Hanke, E. Arrigoni +2
We present numerical studies of a quantum ``projected'' SO(5) model which aims at a unifying description of antiferromagnetism and superconductivity in the high-T cuprates, whi…
cond-mat.str-el2000
Spin orthogonality catastrophe in two-dimensional antiferromagnets and superconductors
Subir Sachdev, Matthias Troyer, Matthias Vojta
We compute the spectral function of a spin S hole injected into a two-dimensional antiferromagnet or superconductor in the vicinity of a magnetic quantum critical point. We show th…
cond-mat1995
Effect of the Three-Site Hopping Term on the t-J Model
Beat Ammon, Matthias Troyer, Hirokazu Tsunetsugu
We have used exact diagonalization and quantum Monte Carlo methods to study the one-dimensional {t-J} model including the three-site hopping term derived from the strong coupling l…