711 citations · 5.5k across the 188 of their papers we have counts for
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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…