168 citations · 441 across the 11 of their papers we have counts for
8 papers · 1 filter
Two-Dimensionality of Magnetic Excitations on the Trellis Lattice: (La,Sr,Ca)CuO and SrCuO
K. P. Schmidt, G. S. Uhrig
We explore the properties of magnetic excitations on the trellis lattice which is relevant for the so-called telephone-number compounds ACuO and the system SrC…
Electron spectra close to a metal-to-insulator transition
Michal Karski, Carsten Raas, Götz S. Uhrig
A high-resolution investigation of the electron spectra close to the metal-to-insulator transition in dynamic mean-field theory is presented. An all-numerical, consistent confirmat…
Spectral Densities from Dynamic Density-Matrix Renormalization
Carsten Raas, Götz S. Uhrig
Dynamic density-matrix renormalization provides valuable numerical information on dynamic correlations by computing convolutions of the corresponding spectral densities. Here we di…
Thermodynamics of a Spin-1/2 Chain Coupled to Einstein Phonons
Alexander Bühler, Götz S. Uhrig, Jaan Oitmaa
A high order series expansion is employed to study the thermodynamical properties of a S=1/2 chain coupled to dispersionless phonons. The results are obtained without truncating th…
Systematic Mapping of the Hubbard Model to the Generalized t-J Model
Alexander Reischl, Erwin Müller-Hartmann, Götz S. Uhrig
The generalized t-J model conserving the number of double occupancies is constructed from the Hubbard model at and in the vicinity of half-filling at strong coupling. The construct…
High Energy Dynamics of the Single Impurity Anderson Model
Carsten Raas, Götz S. Uhrig, Frithjof B. Anders
The quantitative control of the dynamic correlations of single impurity Anderson models is essential in several very active fields. We analyze the one-particle Green function with…