711 citations · 5.5k across the 188 of their papers we have counts for
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On the Incommensurate Phase in Modulated Heisenberg Chains
F. Schönfeld, G. Bouzerar, G. S. Uhrig +1
Using the density matrix renormalization group method (DMRG) we calculate the magnetization of frustrated S=1/2 Heisenberg chains for various modulation patterns of the nearest nei…
Conductivity in a symmetry broken phase: Spinless fermions with corrections
Goetz S. Uhrig
The dynamic conductivity of strongly correlated electrons in a symmetry broken phase is investigated in the present work. The model considered consists of spinless fermions…
Magnetic excitation spectrum of dimerized antiferromagnetic chains
Götz S. Uhrig, H. J. Schulz
Motivated by recent measurements on CuGeO the spectrum of magnetic excitations of an antiferromagnetic chain with alternating coupling strength is investigated.…
Exact single spin flip for the Hubbard model in
Goetz S. Uhrig
It is shown that the dynamics of a single -electron interacting with a band of -electrons can be calculated exactly in the limit of infinite dimension. The co…
Ferromagnetism in the Hubbard model on the square lattice: Improved instability criterion for the Nagaoka state
P. Wurth, G. Uhrig, E. Mueller-Hartmann
The instability of the fully polarized ferromagnetic state (Nagaoka state) with respect to single spin flips is re-examined for the Hubbard model on the square lattice with a large…
Zero and Finite Temperature Phase Diagram of the Spinless Fermion Model in Infinite Dimensions
G. S. Uhrig, R. Vlaming
The phase diagram of the model of spinless fermions with repulsive nearest neighbour interaction is calculated analytically on a hypercubic lattice in infinite dimensions $(d\to \i…
Spin Waves in Quantum Antiferromagnets
B. Kleine, G. S. Uhrig, E. Müller-Hartmann
Using a self-consistent mean-field theory for the Heisenberg antiferromagnet Krüger and Schuck recently derived an analytic expression for the dispersion. It is exact in on…
Drude weight and dc-conductivity of correlated electrons
G. Uhrig, D. Vollhardt
The Drude weight and the dc-conductivity of strongly correlated electrons are investigated theoretically. Analytic results are derived for the homogeneous phase of…
Conductivity of interacting spinless fermion systems via the high dimensional approach
G. S. Uhrig
Spinless fermions with repulsion are treated non-perturbatively by classifying the diagrams of the generating functional in powers of the inverse lattice dimension . The e…